Refactored roulette system (#3271)

Fixes #2887 - thanks to @Everade
Fixes #3292 - thanks to @admkakaroto

Added a script command to open the roulette window from server side.
Added support for clients >= 2018-05-16
Fixed losing behavior for roulette
Enabled roulette system by default
Added a server side delay
Added missing sql log enum value 'Y'

Thanks to @Everade, @admkakaroto, @V0rr, @ecdarreola, @Haikenz and everyone else who contributed to this.

sql-files/upgrades/upgrade_20180705_logs.sql

@@ -0,0 +1,2 @@
+ALTER TABLE `picklog`
+	MODIFY COLUMN `type` enum('M','P','L','T','V','S','N','C','A','R','G','E','B','O','I','X','D','U','$','F','Y','Z','Q') NOT NULL default 'P';