OK button a bit wider
remove clear inventory button; make hotkey only
Merge pull request #896 from redv/interface10_new_research

Pixel perfection: ResearchInfoState
Merge pull request #899 from myk002/move_clear_inv_to_hotkey_only

remove clear inventory button; make hotkey only
set fuse timer to match template
show new state when grenade is (de)activated

if you activate a grenated and explicitly set a timer, the ui is
automatically refreshed and the grenade is visibly shown as primed.
this commit applies that behavior to grenades that get primed with just
a r-click (like proximity grenades) and to all grenades when unprimed
with a r-click.