Auto-anchor attribute regexes, document _validTags
FIX: Use lang- prefixes for HLJS; add nohighlight for ...

text; use a proper whiteListTag() call.

Old posts are not affected - no global rebake is necessary.
Clean up validateAttribute() function

Remove code duplication
FEATURE: Allow explicit rel="nofollow" on links
Fix JSHint
Fix data-* behavior (failure to understand own docs)
Update Markdown tests
Add emoji pl_PL localization
Remove href attribute from tab link to prevent duplicate event on enter.

Because Discourse doesn't preventDefault on links with an href of "#"
this tab-able link was firing a click event when enter was pressed. This
had the unfortunate side effect of breaking the history, making routing
and navigation unreliable.
Feature: Extended user stats in user export csv
Add ?include_raw parameter to topic views
adding last post/joined to usercard
Merge pull request #2939 from awesomerobot/master

adding last post/joined to usercard
FIX: mobile date was pushed offscreen, w/ h-scroll
mobile user profile page tweak
mobile user profile page tweak
FIX: restrict the size of small tags (when nested)
Add archive.org to crawler list to serve no-js to
Merge pull request #2941 from riking/archive_org

Add archive.org to crawler list to serve no-js to
FIX: add 'show emails' button from moderators in user admin section