Added spin paramters to SingleInspiral object and spin1z and spin2z to the coinc inspiral event display.

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.

Added serialized objects to LVAlert messages. This required to move the serializers themselves from api.py to view_utils.py. Some light refactoring ensued.

Changed url for obtaining EEL list to post to skymap viewer. Only one JSON representation of the EEL list is provided by GraceDB, and that is the one in the API.

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.

Fixed LIB robot user/cert migration.

Added guardian migration for LIB user pipeline perms.

Corrected LIB username.

Fixed translator.py to read JSON for LIB events.

Needed to freeze gracedb for guardian migration.

Changes for new LIB user/pipeline and permissions.

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

Added user_is_internal to template context, so as to avoid showing links in nav bar to pages which are inaccessible

Added tests of eel creation for public, lvem, and internal users. EEL access is based on event access.