beginning topic searching + new hook
Merge branch 'master' into topic_searching
closes #1941
closes #1970
Merge remote-tracking branch 'origin/master' into 0.5.1
Merge remote-tracking branch 'origin/master' into 0.5.1
Merge remote-tracking branch 'origin/master' into 0.5.1
closes #1976
show user names who upvoted a post on mouse over
Merge remote-tracking branch 'origin/master' into 0.5.1
Merge remote-tracking branch 'origin/master' into 0.5.1
callback
closes #1974
Merge remote-tracking branch 'origin/master' into 0.5.1
Merge remote-tracking branch 'origin/master' into 0.5.1
closes #1989
check against 0 first
closes #1369
Merge remote-tracking branch 'origin/master' into 0.5.1
closes #1971