Updated to Version 5.8

Merged changes from Version 5.8 (Enhanced Steam Safari forked from
Version 5.5)
Merge branch 'master' of https://github.com/jshackles/Enhanced_Steam_Safari

Conflicts:
	Enhanced_Steam_Safari.safariextension/css/enhancedsteam.css
	Enhanced_Steam_Safari.safariextension/enhancedsteam.js