Implement map settings

[lopezloo]

Implement map settings, such as:

• everything is free
• no weapon shop
• free kevlar
• free defusing kit
• start money
• weapon drop on/off
• weapons on death drop on/off (functionality not implemented yet) (Weapon drop after player death #6)
• match round count
• something which forces players to always spawn with specific weapon
• starting weapons for specific team

which would overwrite global config (if there would be such setting in global config).

Documentation page on wiki: https://github.com/lopezloo/mta-csrw/wiki/Map-settings

[lopezloo]

Implemented no_weapon_shop, no_weapon_drop and everything_is_free in 8a9c40b.