Make collation consistent - utf8_general_ci.

Issue/385

Add check to make sure we don't already have an existing (current) installation - before we get to prereq. stage.

Add note poster on ticket's mass processing.

Notification Bars

Installer revisited

Issue/397

Implement sticky sort on all queues

Attachments handling

Bulk/Auto-reply headers

Add overlay + please wait spinner on form submit

UTF-8 enclode attachment filenames
Improve encoding/decoding routines

* Change default sort order to DESC

1) Ability to limit who can post a reply
2) Expanded staff's stats view.

Fix redirect bug in l.php for IE8