Fix 'geos_c.h not found' build error on Mac for browser app
Add support for removing user palettes from color picker
[composer] Disable atlas if coverage layer is removed from project
Add a changed signal to QgsRelationManager
Don't try to draw icon for hidden color buttons
[composer] Clean up QgsComposerMap api, add docs and missing sip bindings for composer overviews
Split composer map overview tests off into their own test suite
create a relationsChanged signal for relation manager
Fix warning
Rebuild composer test images at 96 dpi to speed up unit tests
Fix failing atlas tests
[composer] Add some missing Transfer/TransferThis methods to sip bindings
[composer] Fix failing QgsAtlasComposition python test
Some fixes to TestQgsComposerTableV2
Cleanup button box when reinitializing attribute form
fix doxygen warnings
german translation update
Restore buttonbox visibility after attribute form reload

Followup febe37de

Fix #11229
Fix #11194
Proper handling of NULL values for edit widgets

 * Photo widget preserves NULL value
 * Web widget preserves NULL value
 * Attribute table can distinguish between 0 and NULL (Fix #11235)
WFS server: insert/update/delete are only dependent on wfs publish property. Funded by Sourcepole QGIS Enterprise