[Testmerge ready] Ports tool behaviours; refactors all tools; adds functionality for self-filling reagent containers (#11700)

* Adds support for self-filling reagent containers

* Sets tool_behaviour on the default set of tools

* Fixing merge conflicts

* Refactors welder to use tool behaviour

* The refactor: part I

* The refactor: part II

* Tool Refactor Part III: Revenge of the Maint

* Tool Refactor Part IV: A New Hope

* Tool Refactor Part V: The Oldcoder Strikes Back

* Tool Refactor Part VI: Return of the Coder

* VII

* Holy shit, it compiles?!

* Nannek I completed your TODO, you owe me ice cream

* Tool helpers; telepad is compliant

* Bugtest, Round 1: Fight

Fuck refactoring disposals

* Buggfixing, Round 2: Electric Boogaloo

* Personal crafting uses tool behaviours now

* Construction datums use new tool behaviours; better way of handling fueltank refuelling; more bugfixing

* multitool_check_buffer change; removes some useless things in tool_helpers

* proc name change

* TRUE/FALSE changes

* Bugfixing, Round 3: A Good Day To Bugfix Hard

Fixes multiple issues raised by the testmerge

* Minor style changes

code/modules/paperwork/photocopier.dm

@@ -167,10 +167,6 @@
 			updateUsrDialog()
 		else
 			to_chat(user, "<span class='notice'>This cartridge is not yet ready for replacement! Use up the rest of the toner.</span>")
-	else if(istype(O, /obj/item/wrench))
-		playsound(loc, O.usesound, 50, 1)
-		anchored = !anchored
-		to_chat(user, "<span class='notice'>You [anchored ? "wrench" : "unwrench"] \the [src].</span>")
 	else if(istype(O, /obj/item/grab)) //For ass-copying.
 		var/obj/item/grab/G = O
 		if(ismob(G.affecting) && G.affecting != ass)
@@ -185,6 +181,10 @@
 	else
 		return ..()
 
+/obj/machinery/photocopier/wrench_act(mob/user, obj/item/I)
+	. = TRUE
+	default_unfasten_wrench(user, I)
+	
 /obj/machinery/photocopier/proc/copy(var/obj/item/paper/copy)
 	var/obj/item/paper/c = new /obj/item/paper (loc)
 	c.info = copy.info