mapped DATA.R8 completely, fixes #2341

d2k is now completely independened from RA MIX/SHP files
BuildingCapture, ActorLost now use notifications.yaml

less redundancy, aggregates notification audio files
overhauled d2k buttons and alternate splash by Sardaukar
added Jes suggestions on d2k R8 to SHP conversion

- windtrapzaps is actually the IX structure animation
- rpg, missile, missile2: frame order reversed like vehicles
customisable icon size in build palette for d2k, fixes #2521
removed blood splatter idle animation for d2k rifle infantry
don't package the PhotoShop files
separate ra chrome for better reusability in d2k
Merge pull request #3072 from ScottNZ/balance

RA balance
removed prerequisites for combat tank, trike
remove prereqs for combat tank, mcv
remove mcv prereq
fixed typo in queue build speed
gun turret visual range increased
rocket turret visual range increased
change prereq of mcv
lower power use of repair pad
increased mcv and harvester speed from 6 -> 7
e1 vs. heavy 15% -> 20%
Merge branch 'bleed' of https://github.com/psydev/OpenRA into bleed