Added ALERT_XMPP_SERVER settings so we can easily keep test instances sending to jabber instead of lvalert.

and was originally motivated by problems with the presentation of the EMBB.
At a basic level, the page obtains information about the Event log messages
and EMBB logs via AJAX calls to the server. This information is fed into
dgrid tables. Extensive use is made of the 'put-selector' to create DOM
elements. This approach eliminates the need for JavaScript code and django
template loops that build HTML. As not all of the features are correct in
Linux browsers (Konqueror, Iceweasel) more work needs to be done.

Changes to allow MBTA events to be submitted via coinc.xml files. Submitting by .gwf files now gives a deprecation warning.

Fixed various problems with reports page that I forgot to update after the Group/Pipeline/Search related changes. Actually, these had not been updated much since ER1, apparently.

Changed settings and alert.py to no longer check the lvalert node against a whitelist of pubsub nodes.

Added an ignore list of emails to which we should not send any response. The main reason for this is that I got into an email loop with Mailer-Daemon and produced a zillion files in my tmp directory.

Added model level permissions on Guardian.GroupObjectPermissions for members of the executives group. Also restored a modified version of the ModelBackend that *doesn't* do authentication. This is so that the has_perm check on Models can work.

Added context processor for login URL, added login URL to base template, added embedded discovery service page.

Committed changes to avoid new tables using INNODB and old ones using MYISAM. This leads to fk constraint errors.

Changed event view template selector. Also reduced number of event detail sub-templates to 3. The extra ones were not necessary.

New features for testing the auth/permissions infrastructure. There is a rudimentary unit test, as well as a management command to create fixtures for the test.

Added view permission for event, created permission objects for existing events, and added code to apply default permissions when new events are created.

Added guardian to installed apps and added ANONYMOUS_USER_ID=-1 and GUARDIAN_RENDER_403=True to settings.

Changed performance log to a simple rather than rotating file. The file needs to be cleaned up rather than rotated, or the 3-day lookback property breaks.

Changed admin and admin email to Branson (e.g., myself), so that I can get emails when the live box throws a 500.

Added migrations for gdb_pe robot cert and 'background' tag. Also added 'background' to the list of blessed tags in the settings module.