user_ifc bugs

[Assemberist]

1. https://github.com/Assemberist/cppRpg/projects/1#card-88512406
2. https://github.com/Assemberist/cppRpg/projects/1#card-91349323
3. https://github.com/Assemberist/cppRpg/projects/1#card-88513775

[Assemberist]

1. Cancelling of throw leads not to previous state but into spell choose.
2. Intreface missing.
   type f -> choose spell for single target -> type q.
3. Last target is blinking when returned from observation instead protagonist.

[Assemberist]

Equipped items disappear when it mooved from inventory (loot_inventory state).

[Assemberist]

From #14:
Throw item of an enemy to him leads to seg fault. (Still broken?)