IDEA-109028 (fsnotifier to not panic on incorrect paths)
fsnotifier: meaningful exit codes
IDEA-88398 Support branching based on "bookmark" feature in Mercurial

*new bookmark action added with new dialog
*inactive bookmark feature added
*creation bookmark for selected revision added
*branches and repositories view on status bar panel updated with bookmarks list
*merge and update to actions are available for bookmarks too
Tick added for current repository in case of multi repository project
Branch tests for RepositoryReader added; refresh for child and parent repositories added in HgMergeProviderTest
fix comparing of match rules [rev=denis.zhdanov]
IDEA-103092 support namespace rule
IDEA-108385 allow matching xmlns:* attributes by name
place xmlns attributes first by default
extract ExternalResourceManagerImpl essentials to xml-psi-impl
'IndexOutOfRange' guard