Misc. Forum + Chat Bugfixes

Fixes #960.
Fixes #961.
Fixes #959.
Fixes #968.
Fixes #969.

http://jenkins.buttonweavers.com:8080/job/buttonmen-AdmiralJota/164/

(I believe the one PMD warning is one that was introduced earlier, not anything new in this pull.)
Typo, this should be 16000, not 1600.

In general, these comments are exactly what i was looking for, so thanks.