Rempove update checks from the application.
Remove /utility/model.
/utility/sort needs admin permission.
Return $this for Gdn_SQL->Reset() to support chaining.
Make SetupController->Configure() private to plug exploit.
Added SearchExcerpt() and substrWord().
Clean up the look of search results.
Switch auto-youtube to the new iframe.
Merge branch 'feature/remove-risks' into release/2.2

Conflicts:
	applications/dashboard/controllers/class.utilitycontroller.php
Make /setup/configure private.
Merge branch 'feature/remove-risks'
Vanilla: version 2.1a40.
Merge branch 'master' into release/2.2

Conflicts:
	index.php
A few tweaks to the search model.
MarkString(), SearchExcerpt():
- Add some protection against marking a string with no terms.
Make Gdn_DirtyCache at least cache results in memory to reduce some db hits.
Tweak to search results.
Fix typo in VanillaSearchModel.
Remove the spam count popin from the dashboard.
Fix email confirm on new installs.