* added release date and code name for alpha2

* generic MailingListView now detects list owners/moderators even if those permissions are not required
* fixed some permission bugs in the list navigation
* changes to the list member page:
    - list owners and moderators
    - "add owner" feature
    - "add moderator" feature
* several layout changes:
    - sub navigation items now have an "active" state
    - changed backgrounds of page and content containers
* added "add owner" feature
* added "add moderator" feature
* several text changes

* added decorator to allow login via http basic auth (to allow non-browser clients to use API views)
* added api view for list index
* several changes regarding style and navigation structure

* view code moved from views.py to views/views.py and views/generic.py
* refactored some view functions as subclasses of MailingListView
* added more detailed error messages to mass subscribe view