IDEA-92933 Optimize

Check only on emptyness
Merge branch 'master' of git.labs.intellij.net:idea/community
Remove deprecated PasswordSafe hack
Refactoring
IDEA-106960 Fix: Do not highlight empty last line selection
Remove redundant variable
IDEA-89630 Add multipage requests support
IDEA-91995 Add save password chekbox in github login dialogs.
IDEA-109466 Add link in notification when repo allready exists
notnull
cleanup
yet another RefCountHolder storing scheme
cleanup
InspectionTool killed
EA-47311 - IAE: ModuleWithDependenciesScope.getFileRoot
EA-46163 - IAE: TObjectHash.throwObjectContractViolation
EA-33207 - assert: PsiWalkingState.elementStarted
EA-41408 - assert: PsiWalkingState.elementStarted
cleanup
Github: fix case-sensitiveness of git repository