adjusting language of activation email

and changing app_name setting to the more verbose ‘West Coast Ocean
Data Portal Marine Planner’
addressing absent stylesheets from some templates

notably the profile confirmation templates (but really anything using
explore_base)…note:  was not able to find a way to get context sent to
django auth templates while using django 1.4 (extra-context param was
added with django 1.5) so the media url had to be hard coded in these
templates (this seemed acceptable in this case as these templates are
either outliers or outside the scope of the project)