fixed PY-12848 Adding local Python SDK does not work

Regression produced in f3eda43
Merge remote-tracking branch 'origin/master'
fixed PY-12698 Noticeable hang when selecting not yet added virtualenv as project interpreter
do not remove contents added by other subsystems, which were run independently from any compile session (e.g. ant build)
cosmetics
IDEA-121171 Reformat only VCS changed text - does not work when editor is not opened
junit 4 library setup (IDEA-124780)
ignore @org.mockito.Spy (IDEA-124802)
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'origin/master'