Ensuring that disallowed types do not show up in search results

* There is a bug in the features export for apachesolr search
  that doesn't respect the types that shouldn't be indexed. This
  will ensure that those types don't show up in search.
Cancel temporary users accounts at the affiliate sites.
Making PR fixes

* Fixing incorrect node type name for campaign_group
* Changing true to TRUE
* Renaming allowed_search_types variable
Remove US users based on the international release timestamp.
Added notfound module
Downgrade hook_update in dosomething_user.
Adding notfound to the full width in preprocess & adding .centered to the helper
Adding notfound css & template
Prevents mbp update hook to prevent errors in https://github.com/DoSomething/dosomething/issues/3320#issuecomment-61872005
Merge pull request #3332 from aaronschachter/function_exists

Check yourself before you wreck the drush updb
Cleanup
Added notfound module to make file
Removed duplicate code
Merge pull request #3331 from deadlybutter/404page

404page
Fixes #3334
Merge pull request #3335 from deadlybutter/fixes3334

Fixes #3334
Add "show more" link to the school finder.
Move US user clensing to drush job. Increase batch to 1000 users.
Add operation lock.
Fixes per #3095 review.