fix metadata-injector
solve some pep8 issues
change metadata community identifier
solve some pep8 problems
some fixes
small cleanup
fix distorted thumbnail problem on Mac
fix wrong title text size for torrents with thumbnails on Mac
Merge pull request #720 from LipuFei/fix_mac_gui

Fix some GUI problems on Mac
Merge pull request #718 from LipuFei/fix_metadata_injector

Fix metadata injector