Implemented bulk move of discussions
Fixed issue where last post information is incorrect when a discussion is moved.
Merge pull request #1511 from Shoat/master

Bulk Move Discussions
ImportModel:
- Don't insert columns that start with a "_".
- Fix permission imports for databases with junction tables.
Added xenforo password hash.
Added the Gdn_Dispatcher_NotFound event.
Allow memory-only routes.
Apply SetRoute change.
Add classes to edit profile form
Allow tables to have reserved word names like "Group".
Merge branch 'master' of github.com:vanillaforums/Garden
Added the .StructuredForm class to be used along-side .FormWrapper.
Title should be a getter too.
Add ForbiddenException() and change the response code for PermissionException().
Datepickerize
Merge branch 'master' of github.com:vanillaforums/Garden
Added Gdn_Form->ImageUpload() and Gdn_Form->CurrentImage() along with some css to handle it.
Updates to core to allow for time-based UI stuff.
Added the .DropRight class for drop down buttons that want to right-align.
Added the Group to the log record types.