* Removing jQuery.ajax.beforeSend - it might be set globally and this code overrides it (part of 62fa253a)
* Avoid resetting Backbone history if already started (part of 9591b526)
* goHome no longer triggers thread:removed event - already triggered up the call stack (part of 9591b526)
* Avoid using beforeSend as it might be set globally (adapted from 2dfe104f)
* Refactor triggering navigation to use constant/method instead of magic strings (part of 4843facd)
* Switching to using jQueyr.prop instead of jQuery.attr
* Fixed email notifications enable/disable (adapted from 8a7f0224)
* Load thread if requested thread isn't loaded yet (adapted from e28dde32)
* Added ability to set custom css classes on search messages (adapted from b2e4c189)
* Actually rerendering view with new model data when it is loaded/changed