fixes #2420 - extract strings for i18n from JavaScript, various i18n fixes

Feature #2368 - i18n extracting strings

Added link to host on some audit entries

fix minor css classes declaration.

added commit comment, history and preview to the template editor.

fixes #1700 audit page performance improved

• Added auditabale name and associated name columns.
• Added username to audit table

audit with association.

audit as twitter and versions for template.

This also closes #1377 as it offer versions and diff view of the tempates.

it is not ideal, but it should handle the most common case for now,
where we should open other feature requests to support all of the ideas in #1377

wip audits upgrade

updates UI to bootstrap v2