Bugfixes, Feature Tweaks, and Final Touches

Microwave not cooking micros/mice: Fixed
Invalid Recipe datum thanks to /microwave prefix: Fixed
Fryer earsplittingly loud: Fixed
Fryer/Oven continuing to cook even after items removed: Fixed
Oven having 'on' icon state when door closed but off: Fixed
Appliances not scaling cooking time/damage based on size: Fixed
Feature added - Burning Food will set off fire alarms and set off a black cloud of smoke!
Overcook time reduced to allow for less margin of error (IE Actively requires you to pay attention)
Multiple Microwave bugfixes, including multicooking/etc not working, recipe errors, icon state errors, ejection errors.

code/modules/food/kitchen/cooking_machines/oven.dm

@@ -39,6 +39,10 @@
 	if(!open)
 		if(!stat)
 			icon_state = "ovenclosed_on"
+			if(cooking == TRUE)
+				icon_state = "ovenclosed_cooking"
+			else
+				icon_state = "ovenclosed_on"
 		else
 			icon_state = "ovenclosed_off"
 	else