Patch notes 0.5.1

Overview:
- Multiple minor performance boosts
- All available sidearms given unlimited ammo
- Shop outline texture added
- Barbed wire slows for longer, but costs $5 more
- Repair & Sell texts added beside buttons on build menu
- Military gate durability significantly increased
- Scoreboard will update on a single row, instead of all 4
- Sentry max ammo increased