Added new version checker/updater
Added new version checker/updater (and English localized strings)
Merge branch 'master' of https://github.com/adobe-research/theseus into update_available
Modified update available to not actually install the extension. Made modifications in respones to code review
Modified code in response to review
Removed debugging junk. (mumble, mumble)
Prettyfied code (loosely based on jslint and (not-so-loosely) on project style)
Merge branch 'pr/41'