Gravel Ditch a3a

ever wanted a map so small you can trimp across it and kill some one respawning?

Gravel Gate: Medium size Asian style map with gravel and a Massive gate
koth_gravelpillar: You fight around the pillar and gravel and capture both!
Multi Stage cp_graveldust: Dust bowl inspired gravel map
koth_highgravel: Small Map, Raised Point
cp_gravelhill: Circular yin yang layout and ever increasing point size 5 cp map

Minor fixes