added global animation actions executed after init/anim/post delay

added global animation actions executed after init/anim/post delay

This change adds the following new options for global animations:

* .init_delay_action
* .anim_delay_action
* .post_delay_action

They can be set to the same values as ".init_event_action" and
".anim_event_action" (buttons, gadgets and key actions).