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 storage_engine=MYISAM so that the new guardian tables will be created with the same database engine as the others.

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.

Removed settings/update.py and modified branson.py to reflect updates. No changes required for settings/default.py

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.