Make pause/unpause behave the same as unity shortcut

Context:
Using unity shortcut when a building is selected.
Using pause shortcut when a building is selected.
Currently they are 2 different behaviours:
- unity: using shortcut will boost selected building
- pause: using shortcut will close building window and select pause cursor tool
Suggestion:
Make the pause shortcut the same as unity, pause/unpause the selected building.