Clean up RSS template so items get updated

The guid element is now the request id concatenated with the latest action id (which will be updated when a new action get added).
Have Travis handle deployment

Will have to wait a bit before I get to see if this works.
Add PermissionType.admin and initial support

Added to the division detail template and Entity.has_permission
Integrate the new admin permission throughout

Also removed the lingering traces of Flask-Principal.
Add the name of the division to the division details
Add a basic cache for permissions checks

Still need to add unit tests.
Conflicts:
	evesrp/__init__.py
	evesrp/auth/models.py
	evesrp/templates/base.html
Merge branch 'admin-permission'

* admin-permission:
  Integrate the new admin permission throughout
  Add PermissionType.admin and initial support

Conflicts:
	evesrp/auth/models.py
Release v0.7.0

Breaks backward compatibility, old databases will have to be trashed (because only I'm using this at the moment, and it's still in testing. If you're using it in production, you're bad). The cause was adding a member to the permission enum, which wasn't gracefully handled by Alembic.