fix mark_all_topics_read in Discuss

(Extension of 5ef9296)
Allow moderators to clear thanks from posts
contact fixes

-title: subject not email
-$result defined
-Trello board linked
Trello public board linked, staff updated for EpicSkills
link fix
admin cp fix
Refuse to submit themes not written in UTF-8

Fixes #50 on Trello
Remove whitespace from contact messages
Notifications fixing

Change notifications in index.php to use notifications(), add to Contact
correct incorrect classes, do some styling
Fix edit timestamps in Theme Discussion
Merge branch 'hotfix/v2.0.2' into develop