CSS/HTML consistency, image scaling and word breaking

Implements image scaling, word breaking and fixes several CSS/HTML
inconsistencies
Implements #430 Moderation Notifications
Intruducing https://github.com/mybb/mybb/issues/197

Warnings when users try to change settings which often cause problems.
Also a JS password comparison.
Merge pull request #963 from Destroy666x/instsett

Introducing https://github.com/mybb/mybb/issues/197
Feature #439 & #430
Feature #439 Moderate Groups
Please work...

Thanks.
Moved img SCEditor scaling to every theme...

...
2 themes more...

And 2 unfixed template bumps which I mentioned in other issues...
Merge pull request #965 from Destroy666x/CSS

Another PR for #816