Adds early abandon penalty period and other tweaks

- New config option to set how many minutes is too early in a round to
abandon it
- Suicide-ghosting and cryo-ghosting now only make you non-respawnable
during the penalty period
- Manually entering a cryopod now despawns you 90% faster
- Joining as a drone now has a confirmation box

code/controllers/configuration.dm

@@ -61,6 +61,7 @@
 	var/ToRban = 0
 	var/automute_on = 0					//enables automuting/spam prevention
 	var/jobs_have_minimal_access = 0	//determines whether jobs use minimal access or expanded access.
+	var/round_abandon_penalty_period = 30 MINUTES // Time from round start during which ghosting out is penalized
 
 	var/reactionary_explosions = 0 //If we use reactionary explosions, explosions that react to walls and doors
 
@@ -560,6 +561,9 @@
 				if("max_loadout_points")
 					config.max_loadout_points = text2num(value)
 
+				if("round_abandon_penalty_period")
+					config.round_abandon_penalty_period = MinutesToTicks(text2num(value))
+
 				else
 					diary << "Unknown setting in configuration: '[name]'"