Added xml.gz mimetype
Added popular question scope + Fixed some issues with notifications on new question
Missing belongs_to on answervote
Implemented friendly URLs for tags and questions
Changed "Answer Questions" to "View Questions" in header
Added needed reserved words to friendly_id
Questions index now supports filtering between popular, recently answered and new questions
Corrected spelling mistake on "Ban Iser"
Changed tabbing on application.less + Added styles to support sort menu + Added JS to support sort menu