Merge branch 'staging'
Merge branch 'staging'
Update changelog.
Create a custom time_tag_with_title helper, based on the rails 4 version of time_tag.
Use time_tag_with_title wherever time_ago_in_words is used.
Convert the thread decorator method to return a date object, and use that date with the time_ago_with_title helper.

Previously the string returned by the helper was un-translatable in any case.
Slightly nicer date formats.