Renamed GUIMainMenu to Initializer

since it is no longer either a GUI nor a menu
Also added the bottle prefab to the player prefab
Allowed setting spawn location(s) for enemies.

This makes it so we can actually USE Mark's bar.
Also: Changed MeleeEnemy->MeleeBiker, same with ranged; made the map prefab have the correct number of rows; set randomizer to use Mark's bar again.
Merge branch 'master' of https://github.com/karatesaul/BarCrawl