added separate "Introduction to Python" action to the welcome screen
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WEB-13229 Live Template variable disappear while editing another variable
fixed PY-13860 Configure Interpreter for the project: interpreter is not set on Add ...
cleanup
cleanup
cleanup
WEB-13249 support name mappings — function params supported
EDU-141 rename lesson and task actions
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fixed EDT exception (find new project action )
simplify extract method object processing: instead of change signature just replace return value for newly created inner class (ensure that fqn won't be inserted)
cosmetics
Merge remote-tracking branch 'origin/master'
fixed PY-13868 Move statement on a comment inside a dict deletes the dict
Merge remote-tracking branch 'origin/master'