Fix typos and add translation notes

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/common/settings.py

@@ -29,7 +29,7 @@ settings_db_sync_task_delay = namespace.add_setting(
 setting_home_view = namespace.add_setting(
     global_name='COMMON_HOME_VIEW',
     default=DEFAULT_COMMON_HOME_VIEW, help_text=_(
-        'Name of the view attached to the branch anchor in the main menu. '
+        'Name of the view attached to the brand anchor in the main menu. '
         'This is also the view to which users will be redirected after '
         'log in.'
     ),

mayan/apps/mayan_statistics/apps.py

@@ -31,7 +31,7 @@ class StatisticsApp(MayanAppConfig):
 
         SourceColumn(
             source=StatisticLineChart,
-            # Translators: Schedule here is a verb, the 'schedule' at
+            # Translators: Schedule here is a noun, the 'schedule' at
             # which the statistic will be updated
             label=_('Schedule'),
             attribute='schedule',

mayan/apps/user_management/views.py

@@ -268,6 +268,8 @@ class UserGroupsView(AddRemoveView):
     secondary_object_model = Group
     secondary_object_permission = permission_group_edit
     list_available_title = _('Available groups')
+    # Translators: "User groups" here refer to the group list of a specific
+    # user.
     list_added_title = _('User groups')
 
     def get_actions_extra_kwargs(self):