IDEUI-46. Fixed bug: Unavailable git commands should not be displayed
IDEUI-25. Add support for mouse scrolling of Git History view
IDEUI-26. Add support for vertical mouse scrolling of Git 'Reset to commit' view
IDEX-738
IDEX-306. Fixed bug: Project tree and a content of files with conflicts don't updated after merge with conflicts.
Merge branch 'master' into CLDIDE-1792