optimization
[log] Cosmetics changes in VcsLogJoiner.
'setMaskProvider' method restored and moved to API (used in 'presentation assistant' plugin)
Fixed bug where Gradle settings were not updated on each project sync.

Change-Id: I0dd7e1355d695fbdc62c8e8c001725fbadb1a7a3
IDEA-122078 Consider excluded output roots on output cleaning
catch NFE added to HgBaseLogParser