Sharing even parts of the .idea folder in worldwide setting is bound to generate more problems than solutions. Therefore it should be removed and consequently ignore in .gitignore. Also adds some Python specific stuff to the .gitignore file.
This reverts commit 2c89bf3b35ee290d7b830ef270df3a96aa48245e, reversing changes made to 9f7e413148ca5dbac9b555d7b0d0a5fa3a0f5340.