Massive updates

- When User Agreement Update is using "relaxed" mode, a notification bar
is placed in the header of the forum alerting the user that the user
agreement has been updated and telling them to go accept it.
- Better directory structures for install
- Clarified UTF-8 only support for other languages
- Updated the copyright years
- Changed naming structure of all added columns to {db_prefix}settings
so that they now are prefixed with "uau_"
- Added meta content-type tag for languages
- All User Agreement Update JavaScript moved to its own file
- Main template now uses subtemplate "reaccept".
- Languages that have "-utf8" in them are now cleaned up a little bit
for display
- All PHP sent to JavaScript variables now include JavaScriptEscape();
for proper sanitation
- Bug fixed with parseAgreement never being called and therefore the
agreement was never getting BBC and Smileys parsed
- Cleaned up browser compat CSS
- Moved auto_suggest CSS to the CSS file with !important just in case
- When you uncheck parse BBC, parse smileys becomes disabled
- Language strings cleaned up and redefined slightly
- All $.click(), $.change() are now using $.on();
- Some jQuery now uses $.prop();
- A lot of jQuery bugs fixed
- Fixed a lot of bugs in Core theme compat