Added i18n strings.

config/locales/en.yml

@@ -81,6 +81,11 @@ en:
         too_long: is too long (no more than %{count} characters)
         too_short: is too short (use more than %{count} characters)
         wrong_length: is the wrong length (has to have exactly %{count} characters)
+      models:
+        task:
+          attributes:
+            done:
+              exclusion: finished tasks may not be repeated weekly
       template:
         body: ! 'Please check the following fields:'
         header:
@@ -1765,6 +1770,8 @@ en:
         hint: Search for user
         noresult: No user found
         placeholder: Search ...
+      submit:
+        periodic: Save weekly task
     index:
       show_group_tasks: Show group tasks
       title: Tasks
@@ -1792,6 +1799,8 @@ en:
       notice: The state of the task has been updated
     show:
       accept_task: Accept task
+      confirm_delete_group: Really delete this and all subsequent tasks?
+      delete_group: Delete task and subsequent
       due_date: Due date
       hours: ! '%{count}h'
       mark_done: Mark task as done