Simplify group detail menu options

    <string name="menu_splitAggregate">Separate</string>

    <!-- Menu item that edits the currently selected group [CHAR LIMIT=30] -->

    <string name="menu_editGroup">Edit group</string>

    <string name="menu_editGroup">Edit</string>

    <!-- Menu item that renames the currently selected group [CHAR LIMIT=30] -->

    <string name="menu_renameGroup">Rename group</string>

    <!-- Menu item that deletes the currently selected group [CHAR LIMIT=30] -->

    <string name="menu_deleteGroup">Delete group</string>

    <string name="menu_deleteGroup">Delete</string>

    <!-- Menu item (in the action bar) that creates a new contacts [CHAR LIMIT=12] -->

    <string name="menu_new_contact_action_bar">New</string>