third GDI mission recreated in Lua
launch a Nod attack after 15 seconds
Increase cost of DOME from 1600 to 1800

Just move this slightly later, and make DOME-first rushes a bit more
risky.
fixed music player image button mouse over highlight
Merge pull request #4830 from Mailaender/music-button-mouseover

Fixed music player image button mouse over highlight
Updated building descriptions.
Overhaul ingame timer displays. Fixes #3062.
Remove World.FrameNumber.
Fix Sound coding style nits.
Merge pull request #4852 from pchote/timer-fixup

Overhaul ingame timer displays.
Merge pull request #4827 from ScottNZ/balance

Make Allied/Soviet factions use general-purpose mines
Add a new RA AttackMove cursor by @pizzaoverhead.
Add a new TD AttackMove cursor.
Add a new TD guard cursor.
Add new TD goldwrench / capture cursors.
Add a new attackoutsiderange cursor to TD.
Remove TD dependency on the RA cursors.
Clean up AttackCharge.
Clean up AttackOmni.
Clean up AttackPopupTurreted.