Added PvP Full Assault mode for playtesting

PvP Mode:

- Decreased spawn protection radius for team B, increased spawn protection radius and unit # for team A.
- Gave AV-42C guns and AIM-9s

PvP 3-Base Mode:

Lowered ticket drain even further

PvP 3-Base Mode:

Updated briefing and description

* Previous update accidentally included test conditions

Complete overhaul of PvP 3-base domination mode:

- Cleaned up sequences and conditionals for capturing an airbase
- Added extra in-game info announcements
- Tickets update much more frequently with reduced drain, increasing runtime to ~45 min
- Added AV-42C role to deploy MANPADS unit
- Optimized spawn protection for each team
- Added T-55 spawns
- Music will now line up with game ending, dynamically starting based on ticket amount and estimated drain
- Lowered volume of voice-overs

All PvE Modes:

- Removed auto-set waypoints because people keep thinking you HAVE to go for the far objectives first...
- Optimized 2nd wave detection radius from airbases
- Added alt-spawn randomization for target practice mode

All PvE Modes:

Added 2 more pop-up objectives

All PvE Modes:

Replaced all AV-42C spawns with T-55s

Added T-55 to Standard and Casual PvE modes.