GUI: disable card deleting on double clicks in deck editor

Double click on cards depends on deck editor mode -- in free mode it will delete cards from a deck, but in construction mode -- it will add it to sideboard. It can be changed with CTRL. Deck editor has hints label about current double click action, but users still wrongly clicks it.

So that's feature is useless and must be reworked to be more stable in all edit modes and places:
- double clicks: moving cards to sideboard/main;
- double clicks with CTRL: delete in free mode, disabled in construction mode (works as moving cards);