Fixes #7718

"Turn on stereo" and "turn on headlights" mapped to same key.
Fixes #7558

12h time display buggy in wide sidebar.
(I removed all padding in 12h mode for double-digit hours, preventing overlap with SAFE notification)
Armour sort screen fix

Fixes segfault in armour sort screen when player is naked; tmp_worn[]->type was being accessed while it was empty.
'k' for reaktor

To fix conflicts with the 'm'usical stereo.
Merge branch 'stereo_fix' of https://github.com/reverieAlice/Cataclysm-DDA into WhiteRabbit
Merge branch 'adjust_12h_disp' of https://github.com/reverieAlice/Cataclysm-DDA into WhiteRabbit
Merge branch 'sort_armour_fix' of https://github.com/reverieAlice/Cataclysm-DDA into WhiteRabbit