Use regexp for transforming module name into package name (PY-13336)

str.strip() strips all the characters contained in its arguments in no
particular order.
Added 'metaclass' to default Python dictionary (PY-13357)
Added 'iter' and 'cinit' to default Python dictionary (PY-7609)
Fixed completion of 'metaclass' for Python 2/3 (PY-1860, PY-13157)
Merge branch 'python-fixes'
revert updating plugins multiple times
jps serialization: load run configuration with unknown type