Change "Auto Accept" to "Auto Apply" in options dialog

This changes the "Auto Accept" label to "Auto Apply" to more
accurately reflect the new panel's apply button.

Change-Id: Id6e71af56c39485b6b45e9b5b9dd329acafe3fb3
BUG #13782. Fixed vtkTextSourceRepresentation in client-server mode.

vtkTextSourceRepresentation wasn't updating in client-server mode. The problem
was that the client-side representation never realized that the input pipeline
had changed and hence it never delivered new data. This fixes that issue.

Change-Id: Ica53fc3bf3d7100f17d170c150dd9766aac67e0d
Forward VTK to gerrit/master

Change-Id: I74d18c2a0d745c99865915e20c0549f09df044e4
Change the Properties Panel button slots to be public

This changes the apply()/reset()/deleteProxy()/showHelp() slots
in the pqPropertiesPanel class to be public instead of private.
This allows for the application code to programmatically click
the buttons on the properties panel.

Change-Id: I42de8f35f14c0b8ac26c7bddfa730e222ff7751f
Merge topic '13724-fix-auto-apply-label-2'

baf7453 Change "Auto Accept" to "Auto Apply" in options dialog
Merge topic '13782_fix_text_source'

937f0e1 BUG #13782. Fixed vtkTextSourceRepresentation in client-server mode.
Merge topic 'forward-to-vtk-master'

7810100 Forward VTK to gerrit/master
Merge topic 'properties-panel-public-apply'

082da13 Change the Properties Panel button slots to be public