Don't swallow error on startup

Startup errors which could point to the actual failure
were being swallowed by Blitz. NB: This particular error
condition was initially related to the Ice.IPv6 setting.

See:
* https://www.openmicroscopy.org/community/viewtopic.php?f=5&t=7527
* https://www.openmicroscopy.org/community/viewtopic.php?f=5&t=7456&p=14166#p14166
Introduce an optional IPv6=0 property

While we're at it, might as well place
an anchor in templates.xml so users can
more quickly find the formatting needed
to disable IPv6.
Improve templates.xml explanation
Update develop submodules

Repository: openmicroscopy/openmicroscopy
Already up-to-date.

Repository: openmicroscopy/bioformats
Updating f247b30..c2a72ee
Merged PRs (fast-forward):
  # PR 1162 melissalinkert 'AFI: populate magnification and physical pixel size metadata'
  # PR 1185 hflynn 'Fixing imglib scifio github link (rebased onto develop)'
  # PR 1176 rleigh-dundee 'xsd-fu: Use package namespaces throughout and consolidate commands'
  # PR 1170 rleigh-dundee 'cmake: Enable CMP0042 @rpath usage for MacOSX'
  # PR 1175 melissalinkert 'Fix channel count when exporting RGB images in ImageJ'
  # PR 1174 melissalinkert 'CZI: prevent AIOOB exception when populating position metadata (rebased onto develop)'
  # PR 1155 joshmoore 'Memoizer errs (rebased onto develop)'
  # PR 981 melissalinkert 'Ignore namespaces when filling in an XMLAnnotation's Value'
  # PR 1138 melissalinkert 'Lots of Zeiss CZI fixes (rebased onto develop)'
  # PR 1169 melissalinkert 'ImportProcess: remove UI-level exception reporting'
  # PR 1168 melissalinkert 'Inveon: ignore the absolute path to the image file'
  # PR 1165 melissalinkert 'First round of Nikon ND2 fixes (rebased onto develop)'
  # PR 1163 melissalinkert 'Fix for BH .Sdt meas mode 0 & 1 single pixel files & (unrelated) problem with dividing by increment count. (rebased onto develop)'
  # PR 1166 mtbc 'assist #12385: use ArrayList instead of Vector'
  # PR 1108 melissalinkert 'MRC: fix handling of mode 16 data (rebased onto develop)'
  # PR 1116 rleigh-dundee 'cpp: Add TIFF support (1)'
  # PR 1145 joshmoore 'Make private class in DV reader public (see #12358)'
  # PR 1156 sbesson 'Updating Zeiss links (rebased onto develop)'
  # PR 1158 hflynn 'Removing dead link from Minolta-MRW format page (rebased onto develop)'
  # PR 1110 sbesson 'BF docs: Jenkins cleanup (rebased onto develop)'
  # PR 1147 rleigh-dundee 'cpp: bioformats: PixelProperties supports pixel types of different endianness'
  # PR 1152 hflynn 'Comstat2 link (rebased onto develop)'
  # PR 1149 sbesson 'Add prefix to zip file produced by dist-bftools target (rebased onto develop)'
  # PR 1106 melissalinkert 'Imaris HDF: make sure that all resolutions have the same ZCT sizes (rebased onto develop)'
  # PR 1097 melissalinkert 'CellSens: fix off-by-ones in subresolution tile calculations (rebased onto develop)'
  # PR 1070 melissalinkert 'DICOM: expand sequence reading to include known sequences (rebased onto develop)'
  # PR 1060 melissalinkert 'Allow dist-matlab to run on Windows'
  # PR 1049 melissalinkert 'DICOM: fix file grouping so that path names are normalized (rebased onto develop)'
  # PR 1028 melissalinkert 'Large fileset performance improvements (rebased onto develop)'
  # PR 1135 joshmoore 'Update native-lib-loader to 2.0.1 release (rebased onto develop)'
  # PR 1142 hflynn 'Add 'show and edit on Github' to docs side menu (rebased onto develop)'
  # PR 1137 melissalinkert 'Update version history for 5.0.2 (rebased onto develop)'
  # PR 1103 melissalinkert 'Flex: fix support for new file naming scheme (rebased onto develop)'
  # PR 1092 sbesson 'Allow for a >1 count increment in B&H .sdt Files. (rebased onto develop)'
  # PR 1101 melissalinkert 'QuickTime: fix header/footer parsing bug (rebased onto develop)'
  # PR 1127 sbesson 'CI logging improvements (rebased onto develop)'
  # PR 1102 melissalinkert 'Metamorph .nd performance improvements (rebased onto develop)'
  # PR 1109 melissalinkert 'Fix memo file path creation on Windows (rebased onto develop)'
  # PR 1100 melissalinkert 'Fix single plane ND2 line scan (rebased onto develop)'
  # PR 1096 melissalinkert 'Fix 5D Imspector support (rebased onto develop)'
  # PR 1098 melissalinkert 'Gatan metadata fixes (rebased onto develop)'
  # PR 1082 rleigh-dundee 'C++: Add support for integers of different endianness'
  # PR 1120 rleigh-dundee 'cpp: ome-bioformats: Use std::complex for complex pixel types'
  # PR 1118 joshmoore 'LogbackTools: silence ClassCastException traces (rebased onto develop)'
  # PR 1128 hflynn 'Update auto-generated documentation on develop'
  # PR 1119 hflynn 'User docs tidying (rebased onto develop)'
  # PR 1099 melissalinkert 'Disable file grouping in ImageJ remote import plugin (rebased onto develop)'
  # PR 1107 melissalinkert 'Exclude log4j and packages from target-test-runner (rebased onto develop)'
  # PR 1121 sbesson 'Fix bfGetPlane tile input check (rebased onto develop)'
  # PR 1117 rleigh-dundee 'cpp: Minor doxygen fixes'
  # PR 1126 hflynn 'Leica link (rebased onto develop)'
  # PR 1083 rleigh-dundee 'make: Convert variables to ant properties'
  # PR 1075 hflynn 'Remove dead bitmap link (rebased onto develop)'
  # PR 1076 hflynn 'Adding CONTRIBUTING file to BF repo (rebased onto develop)'
  # PR 1073 rleigh-dundee 'docs: Delegate all sphinx Makefile targets to ant'

Repository: ome/scripts
Updating 31f89c4..491d96e
Merged PRs (fast-forward):
  # PR 76 will-moore 'Fix 'No permissions' error in Make_Movie.py. See #12227'
  # PR 81 will-moore 'Make movie format time 12254 (rebased onto develop)'
  # PR 84 sbesson 'Get inputs all scripts (rebased onto develop)'
  # PR 79 sbesson 'Travis fix (rebased onto develop)'

Repository: openmicroscopy/ome-documentation
Updating be161c6..81205bb
Merged PRs (fast-forward):
  # PR 837 joshmoore 'Add mention of 'Protocol' failure for IPv6 (rebased onto develop)'
  # PR 832 sbesson 'Fix minor points on the Cpp page (rebased onto develop)'
  # PR 833 sbesson 'Restore build system on the main developers documentation index (rebased onto develop)'
  # PR 828 sbesson 'Search page tidying up (rebased onto develop)'
  # PR 829 sbesson 'OMERO Developer doc tidying (rebased onto develop)'
  # PR 823 joshmoore 'Add deploy downstream: 'merge-maven''
  # PR 825 hflynn 'Contributing section update'
  # PR 822 hflynn 'Schema links develop'
  # PR 817 ximenesuk 'Update DropBox documentation (rebased onto develop)'
  # PR 812 sbesson 'Remaining changes post 5.0.x job migration'
  # PR 816 will-moore 'Webgateway mip 5150 (rebased onto develop)'
  # PR 814 bpindelski 'Add LDAP error message explanation.'
  # PR 806 aleksandra-tarkowska 'Webstart template (rebased onto develop)'
  # PR 807 aleksandra-tarkowska 'ldap over ssl instruction improvement (rebased onto develop)'
  # PR 805 hflynn 'Adding contributing doc link & Zeiss link update'
  # PR 810 hflynn 'Adding example server setup page  (rebased onto develop)'
  # PR 743 sbesson 'Propose redesign of OMERO and Bio-Formats 5.0 CI jobs'
  # PR 809 sbesson 'Travis fix (rebased onto develop)'
  # PR 802 snoopycrimecop 'Update index.txt'
  # PR 801 sbesson 'Add Edit on Github button (rebased onto develop)'
  # PR 783 mtbc 'document new // separator in omero.fs.repo.path (rebased from dev_5_0)'
  # PR 782 will-moore 'Custom web login 11961 (rebased onto develop)'
  # PR 795 manics 'Root password reset command (rebased onto develop)'
  # PR 786 mtbc 'warn that in-place ln_s can be slower for HCS (rebased from dev_5_0)'
  # PR 797 ximenesuk 'Add DropBox Windows requirements'
  # PR 793 hflynn 'Ice35 support for Windows (rebased to develop)'
  # PR 791 hflynn 'Limitations update for 5.0.2 (rebased onto develop)'
  # PR 792 bpindelski 'Remove repetition of the word "files" (rebased onto develop)'
  # PR 787 manics 'Add code-signing documentation (rebased onto develop)'
  # PR 776 sbesson 'Remove all references to CI jobs in the official documentation'
  # PR 772 rleigh-dundee 'make: Convert variables to ant properties'
  # PR 771 hflynn 'Adding pyramid generation data duplication warning to in-place import (rebased onto develop)'
  # PR 760 rleigh-dundee 'Make Ice 3.4 the minimum supported version'
  # PR 768 hflynn 'Rephrasing CONTRIBUTING re: branch for PRs (rebased onto develop)'
  # PR 769 hflynn 'Making API doc links point at release version (rebased onto develop)'
  # PR 766 rleigh-dundee 'ant: Default all properties and handle empty vars in conf.py'
  # PR 758 hflynn 'Adding API doc links to OMERO docs front page (rebased onto develop)'
  # PR 759 hflynn 'ticket 10030 fix - contributing file for docs repo (rebased onto develop)'
  # PR 761 rleigh-dundee 'Delegate all Makefile targets to ant'

Generated by OMERO-5.1-latest-submods#134 (http://ci.openmicroscopy.org/job/OMERO-5.1-latest-submods/134/)
Merge pull request #2709 from jburel/rebased/develop/intensity-view-add

Intensity view add (rebased onto develop)
Merge pull request #2688 from manics/hdf5_locking-5_1

Use a global HDF5 lock (trac: 10464)
Merge pull request #2694 from PaulVanSchayck/patch-1

Fix hover for .tablesorter (see Basket)
remove some empty CSS clutter
Merge pull request #2713 from sbesson/rebased/develop/12187_linux_target

Append linux to the Linux OMERO clients (rebased onto develop)
Remove unused import
Remove size limit for preview.
Limit preview to non big images.
Merge pull request #2714 from mtbc/expose-overrides

expose some @Override annotations (rebased from dev_5_0)
merge develop -D org: PR 2127 (Working view to email announcements to selected users, groups, email addresses and/or all users)
merge develop -D org: PR 2391 (Imagej omero (rebased onto develop))
merge develop -D org: PR 2411 (Update develop submodules)
merge develop -D org: PR 2435 (cpp: RTypesI: use static locals in place of duplicated globals)
merge develop -D org: PR 2550 (Avoid upscaling of bird's eye image)
merge develop -D org: PR 2560 (for-loop fix removes 'undefined' from reset dialog. See #12301)
merge develop -D org: PR 2612 (Add wsgi.py for OMERO.web (develop))