gd_summer b4a

Added mvm_gd_summer_b4_hell_Midsummer_Madness

Slight buffs and debuffs to all bots based off feedback

Fixed destroyed hogs applying stun condition to red team

Chaotic Christmas:
Made rocket heavy's do more damage
Made all giants overall stronger
Replaced all krits medics with quickfix medics
Removed crits from shotgun heavys on wave 5
Increased difficulty overall

Fixed some HOGs not displaying damage correctly
Fixed clipping on a pipe near robot spawn
Added env_sun
Smoothed sun spread angle

Removed Scout minicrits
Mad milk now applies jarate to victims
Fixed lighting inconsistencies
Made Stun-gate beams less shiny
HOGs now change color based on how much damage they have taken
Added loading screen menu photos and motd readme
Fixed some textures

Wave changes:
Fixed coaltown exp
Made giant bosses stronger