IDEA-134036 Can't "Mark[file] as plain text" during indexing
treat lambdas as notnull in dfa & nullity inference (IDEA-134045)
drop java file symbol cache on any change inside that file (in case it's outside source or non-physical, IDEA-133971)
refactor JBUI: dedicated class for borders
refactor JBUI: dedicated class for Fonts
Merge remote-tracking branch 'origin/master'