merge --squash persona branch to take care of a false merge commit in

the basic_auth branch that persona is forked from

Conflicts:
	mediagoblin/templates/mediagoblin/auth/login.html
	mediagoblin/templates/mediagoblin/auth/register.html
	mediagoblin/templates/mediagoblin/edit/edit_account.html

These are commit messages from the squashed persona stuff:

 - added tests and fixed minor errors
 - fixed a redirect loop when only persona is enabled and accessing /auth/login
 - moved persona.js to plugin's static dir
 - fixes for add/remove persona emails
 - add and remove personas
 - working with multiple plugins
 - working version
 - switched to hidden form instead of ajax
 - beginings

mediagoblin/auth/views.py

@@ -41,8 +41,11 @@ def register(request):
     """
     if 'pass_auth' not in request.template_env.globals:
         redirect_name = hook_handle('auth_no_pass_redirect')
-        return redirect(request, 'mediagoblin.plugins.{0}.register'.format(
-            redirect_name))
+        if redirect_name:
+            return redirect(request, 'mediagoblin.plugins.{0}.register'.format(
+                redirect_name))
+        else:
+            return redirect(request, 'index')
 
     register_form = hook_handle("auth_get_registration_form", request)
 
@@ -73,8 +76,11 @@ def login(request):
     """
     if 'pass_auth' not in request.template_env.globals:
         redirect_name = hook_handle('auth_no_pass_redirect')
-        return redirect(request, 'mediagoblin.plugins.{0}.login'.format(
-            redirect_name))
+        if redirect_name:
+            return redirect(request, 'mediagoblin.plugins.{0}.login'.format(
+                redirect_name))
+        else:
+            return redirect(request, 'index')
 
     login_form = hook_handle("auth_get_login_form", request)