Restore Push-to-Talk checkbox
Redo Hotkeys Settings alignment/positioning

Fixes long strings for both labels (e.g. from locale/ro.txt) and long
key combos (e.g. CTRL+ALT+SHIFT+PGUP with German keyboard layout)

Also both Push-to-Talk hotkeys can now be reset separately
Fix Advanced Settings alignment of "Use Multithreaded Optimizations"