[9362] Make specs work at least for action bars
* Propertly add/remove required for specs work spells at 63624/63651.
* Copy current spec action bars to new spec at specs count increase, and delete action bars data at spec count decrease.
* Avoid undexpected action button data test for not active spec at loading/copy, but test action buttons data at spec activation.
* Reset active spec to default if active spec removed.
* Remove talent reset at spec switch that useless at this moment.
Also note that for future case this also can be not correct and batter unlearn/learn only talents that different in specs.
After this changes specs must fully work in action bar part without unexpected another effects.