Improve visual appearance of composer grid by making sure it is always drawn using a 1 pixel width cosmetic pen
Remove options for composer pen width
Add option for grid snap tolerance, move selection tolerance spin box to new section (fix #8214)
Add method for preventing composer items from changing mouse cursor and workaround for qt bug 3732
[FEATURE] Add composer pan action
[FEATURE] Allow panning compositions by dragging with middle mouse button
[FEATURE] Allow panning of composer by holding space key
Fix for #8860, (followup 65200e3)

- Hide background of tool button's menu button on Ubuntu
Fix for #8874, right-clicking on message in message bar shows black background for context menu
fix set image no data, fixes #8773
Don't draw mouse handles in composition outputs (fix #8879)
[Plugin installer] fix #8876
API documentation for QgisInterface
Fix loading composer item frame thickness (fix #8866)
Propagate WMS identify GML schema error and show it in results, fixes part of #8724
Fix for #8847, blank entries (menu separators) in Customization dialog tree

- Do not add separator actions to menu action tree; separators could not be toggled on/off with customization anyways
Update timeout of network request, if data is transferred
Up to now, any network connection was killed after a max amount of
/qgis/networkAndProxy/networkTimeout milliseconds. This led to problems
for large or otherwise slow downloads.
This patch circumvents timeouts for as long as data is being
transferred.
added disclaimer - Development funded from Regione Toscana - SITA
Merge pull request #965 from luipir/SITA2-WmsTileRetry

Added disclaimer to WMS TileRetry feature - Development funded from Regione Toscana - SITA
(followup a563f2a and 3e27811)
Merge pull request #916 from nyalldawson/composer_grid2

Composer grid fixes
use static locals instead of global pointers for some singletons
(proably more valgrind happyness; followup 572bda85)