fixes bug on template where integer 0 is being represented as n/a
adjusts percentify template tag to take zero as integer into account, sted none
finalizes changes made in dev environment to show integer 0 where necessary
adjusts second instance of percentify template tag on index.html
adjusts instance of percentify template tag on detail.html
adjusts instance of percentify template tag on embeddable.html
adjusts instance of percentify template tag on archives.html
upgrades django version to 1.4.6 per release notice