Parse jvmcfg service names from the end

With the addition of service-specific support in
`bin/omero config`, the previous jvmcfg naming
scheme of `omero.jvmcfg.$SERVICE.$PROPERTY` was
perhaps confusing. Now, the service name is parsed
from the end: `omero.jvmcfg.$PROPERTY.$SERVICE`.
Limit the number of elements in jvmcfg keys

`bin/omero admin jvmcfg` was printing values
for the wrong service. E.g.:
```
   bin/omero config set omero.jvmcfg.perm_gen.indexer 2g
   bin/omero admin jvmcfg
```
listed `blitz=Settings({"permgen.indexer": "2g"})`.

Now we assume that all the jvmcfg properties are a single
dotted element long so that we can strip off the remaining
services.
Improve output of `bin/omero admin jvmcfg`

 * Empty settings are now `Settings()` rather than
   `Settings({})`.
 * Empty settings are omitted from jvmcfg
 * Setttings values follow other values.
Respect user-specific heap_size in percent strategy
Unsuppress fs rename --no-move option.
Remove unused import.
Merge pull request #2874 from joshmoore/rebased/develop/swap-jvmcfg

Swap jvmcfg (rebased onto develop)
Merge pull request #2882 from ximenesuk/rebased/develop/unsuppress-no-move

Unsuppress fs rename --no-move option. (rebased onto develop)
Update develop submodules

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

Repository: openmicroscopy/bioformats
Updating 3b856bc..fd9850d
Merged PRs (fast-forward):
  # PR 1237 sbesson 'Prepend Maven central in the pluginRepositories block (rebased onto develop)'
  # PR 1210 melissalinkert 'Zeiss LSM: fix offset calculationg for > 4GB files with SizeT > 1'
  # PR 1220 emilroz 'Czi expand metadata to all the channels (rebased onto develop)'
  # PR 1200 melissalinkert 'Fix off-by-one in LZW decoding'
  # PR 1218 rleigh-dundee 'travis: Switch from raring to saucy'

Repository: ome/scripts
Updating 9771f00..87ca83d
Merged PRs (fast-forward):
  # PR 90 bpindelski 'Avoid division by 0 in Plot Profile. (rebased onto develop)'

Repository: openmicroscopy/ome-documentation
Updating ce96fa7..d3ad928
Merged PRs (fast-forward):
  # PR 920 aleksandra-tarkowska 'adding HTTPS server references (rebased onto develop)'
  # PR 916 bpindelski 'Further clarification of in-place on Windows. (rebased onto develop)'
  # PR 915 bpindelski 'Deprecate omero_client.jar. (rebased onto develop)'
  # PR 883 bpindelski 'Document client requirements for in-place import on Windows. (rebased onto develop)'
  # PR 913 sbesson 'Add switch-group info to user CLI page (rebased onto develop)'
  # PR 906 sbesson 'Fine tune config (rebased onto develop)'
  # PR 904 sbesson 'Update auto-generated properties'
  # PR 909 sbesson 'Remove limitations (rebased onto develop)'
  # PR 907 sbesson 'Breaking model (rebased onto develop)'
  # PR 908 sbesson 'Added documentation for Active Directory LDAP (rebased onto develop)'
  # PR 905 sbesson 'Adv config example (rebased onto develop)'
  # PR 887 sbesson '5.0.3: CLI documentation (rebased onto develop)'
  # PR 879 dpwrussell 'Added warning about web plugins to upgrade docs'
  # PR 891 sbesson 'Add travis_retry to sudo apt-get install commands in .travis.yml (rebased onto develop)'
  # PR 888 sbesson 'Expand setup.py test/py.test options description (rebased onto develop)'
  # PR 889 rleigh-dundee 'Update recommended PostgreSQL version to 9.2 for float bug fix'
  # PR 886 ximenesuk 'DropBox note (rebased onto develop)'
  # PR 890 joshmoore 'New search docs (rebased onto develop)'
  # PR 864 mtbc 'move %time% template expansion term to only user-owned (rebased from dev_5_0)'
  # PR 880 sbesson 'Release jobs redesign'
  # PR 878 sbesson 'Dco revert'
  # PR 874 mtbc 'add note about consequences of "damaging" in-place import files (rebased from dev_5_0)'
  # PR 882 sbesson 'OMERO.server properties: documentation template (rebased onto develop)'
  # PR 799 manics 'Linux walkthrough (rebased onto develop)'
  # PR 869 joshmoore '12311 auto memory docs (rebased onto develop)'
  # PR 871 rleigh-dundee 'travis: Switch from raring to saucy'

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