login: Move method to store user in session out of login controller.

- Preparation to migrate the login view to pyramid.

rhodecode/controllers/login.py

@@ -52,12 +52,7 b' from rhodecode.model.user import UserMod'
 log = logging.getLogger(__name__)
 
 
-class LoginController(BaseController):
-
-    def __before__(self):
-        super(LoginController, self).__before__()
-
-    def _store_user_in_session(self, username, remember=False):
+def _store_user_in_session(username, remember=False):
         user = User.get_by_username(username, case_insensitive=True)
         auth_user = AuthUser(user.user_id)
         auth_user.set_authenticated()
@@ -86,6 +81,12 b' class LoginController(BaseController):'
             headers = [('Set-Cookie', session.request['cookie_out'])]
         return headers
 
+
+class LoginController(BaseController):
+
+    def __before__(self):
+        super(LoginController, self).__before__()
+
     def _validate_came_from(self, came_from):
         if not came_from:
             return came_from
@@ -134,7 +135,7 b' class LoginController(BaseController):'
                 session.invalidate()
                 c.form_result = login_form.to_python(dict(request.POST))
                 # form checks for username/password, now we're authenticated
-                headers = self._store_user_in_session(
+                headers = _store_user_in_session(
                     username=c.form_result['username'],
                     remember=c.form_result['remember'])
                 raise self._redirect_to_origin(
@@ -170,7 +171,7 b' class LoginController(BaseController):'
             return render('/login.html')
 
         if auth_info:
-            headers = self._store_user_in_session(auth_info.get('username'))
+            headers = _store_user_in_session(auth_info.get('username'))
             raise self._redirect_to_origin(
                 location=c.came_from, headers=headers)
         return render('/login.html')