* src/modest-text-utils.[ch]:

* src/modest-text-utils.[ch]:
        * Refactorized method to get the current selection of a label in
          text utils. This will be now used in ui actions and dimming
          rules.
* src/modest-ui-actions.c:
        * (modest_ui_actions_on_copy): now copy gets the selection of
          a focused label, instead of the full label (fixes NB#80195).
        * (folder_move_to_cb): now we focus the new position of a folder
          after a move to operation to avoid losing focus (fixes
          NB#78939).
* src/modest-ui-dimming-rules.c:
        * (..._on_add_to_contacts): now we use the text utils method
          to retrieve current selection of a GtkLabel.

pmo-trunk-r4134