Fix chat command !setallspawn

Fix color of spawns
Optimization

Added depiction of spawns for players.

New setting:
sp_render_spawns - Enable spawn depiction for players? (1 = Yes; 0 = No) (Default: 1)

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Added protection against running out of spawn, shot and return to spawn, that would not be able to kill.

New setting:
sp_anti_back_spawn - Enable protection from running out of spawn, shot and back to spawn, for protection? (1 = Yes; 0 = No) (Default: 1)

Added disable blocking of props in spawn

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Fix settings