GUAC-932: Make display of connections and groups within guacGroupList more abstract.
GUAC-932: Begin migration of admin to new guacGroupList. Remove unused util module.
GUAC-932: Allow root group to be shown in group list.
GUAC-932: Migrate internals of locationChooser to guacGroupList.
GUAC-932: The guacGroupList context is an arbitrary object.
GUAC-932: Fix comments regarding connection and connection group management.
Merge pull request #24 from glyptodon/cleanup-angular

GUAC-932: Partially restore admin UI