BUG:11948 make ClosestPointRegion mode useful.

Thanks Xabi Riobe for the patch.

Change-Id: I7190dc401aa1f59883aa329eee9aaacf21643aa9
Fix marker scaling in GL2PS exports.

Added a regression test to check marker sizes.

Change-Id: I0532f47f870a718945b0da77d2a024af7d605b60
Change the default compression level for PNG to 5.

The available range is 0..9. Recommendation from
'png_set_compression_level - Linux Standard Base' say 3..6 perform as
well as 9 and do considerably fewer calculations.

Change-Id: Ib2a8e651bd570be13a0d847f61dca6f4b41b74ee
ENH: Restore tests for IO/Infovis

The tests and data existed, but the tests were not in the CMakeLists.txt
file.

Change-Id: Icdd5b0237771651eec2c259d755a85656003081d
Merge topic 'gl2ps-marker-fix' into master

8d9ff8e8 Fix marker scaling in GL2PS exports.
Merge topic '14426-huge-png' into master

21df2adc Change the default compression level for PNG to 5.
BUG: Fixed bugs where counter was being over-decremented.

Small bug in the loop logic caused SkippedCells to be over-
decremented, preventing the iterator from moving to the next
cell.

Change-Id: Ibc42a4a40bcc16e794e6aa5082693bfdeeb2fb7b
Merge topic 'Coverage_IOInfovis' into master

03622d1f ENH: Restore tests for IO/Infovis
Merge topic '0011948-accessors-for-selection-mode' into master

016a2a08 BUG:11948 make ClosestPointRegion mode useful.
Bug0014435 Fix hyperstreamline segfault when no cell scalars.

per http://www.vtk.org/Bug/view.php?id=14435

Thanks Raine for the patch.

Change-Id: I5b5bd31e630fc6faf5576a9af4459b681e366145
Fix vtkDataReader with signed char

The vtkDataWriter class uses the "signed_char" identifier for signed
char data but the vtkDataReader class only checks for "char". Now it
accepts either "char" or "signed_char".

This fixes VTK bug #13744.

Change-Id: I7f0c7614e4d01a0b700ab84a370d1896c63b18d1
Merge topic 'skippedcells-fix' into master

a4c85d8e BUG: Fixed bugs where counter was being over-decremented.
ENH: Restore test for FixedWidthTextReader

The test and data existed, but the test was not in the CMakeLists.txt
file.

Change-Id: I0939f5bdde2f497bac756da2ce0e485f4052ce29
Merge topic '0014435-make-hyperstreamline-handle-no-scalars' into master

9ec53a31 Bug0014435 Fix hyperstreamline segfault when no cell scalars.
Merge topic '13744-data-reader-signed-char' into master

d92bf40e Fix vtkDataReader with signed char
Merge topic 'Coverage_FixedWidthTextReader' into master

34ac668a ENH: Restore test for FixedWidthTextReader
Added file upload server which can be run with server.py or launcher.py

This upload server can be optionally added to the base python web app,
or else run as a child of the launcher, which have been changed to
support this new functionality.

Change-Id: Ia2bc993643a686d7c5e25d92a9dd38441ef2a221
Merge topic 'vtkweb-add-upload-server' into master

4e55f3b3 Added file upload server which can be run with server.py or launcher.py