Unicode awareness Part 2 -- copytext() (#48512)

* Unicode support Part 2 -- copytext()

This is the transition of all copytext() calls to be unicode aware and also some nearby calls in the same functions. Most things are just replacing copytext() with copytext_char() as a terrible character limiter but a few others were slightly more involved.

I replaced a ton of
````
var/something = sanitize(input())
something = copytext(something, 1, MAX_MESSAGE_LEN)
````

with a single stripped_input() call. stripped_input() already calls html_encode(), trim(), and some other sanitization so there shouldn't be any major issues there.

This is still VERY rough btw; DNA is a mess, the status displays are complete ass, there's a copytext() in code\datums\shuttles.dm that I'm not sure what to do with, and I didn't touch anything in the tools folder. I haven't tested this much at all yet, I only got it to compile earlier this morning. There's also likely to be weird bugs until I get around to fixing length(), findtext(), and the rest of the string procs.

* Makes the code functional

* Assume color hex strings are always # followed by ascii.
Properly encodes and decodes the stuff in mob_helpers.dm which fixes some issues there.

* Removes ninjaspeak since it's unused

code/modules/paperwork/folders.dm

@@ -45,15 +45,13 @@
 			to_chat(user, "<span class='notice'>You scribble illegibly on the cover of [src]!</span>")
 			return
 
-		var/inputvalue = input(user, "What would you like to label the folder?", "Folder Labelling", null) as text|null
-		
-		if (isnull(inputvalue))
+		var/inputvalue = stripped_input(user, "What would you like to label the folder?", "Folder Labelling", "", MAX_NAME_LEN)
+
+		if(!inputvalue)
 			return
-		
-		var/n_name = copytext(sanitize(inputvalue), 1, MAX_NAME_LEN)
-		
+
 		if(user.canUseTopic(src, BE_CLOSE))
-			name = "folder[(n_name ? " - '[n_name]'" : null)]"
+			name = "folder[(inputvalue ? " - '[inputvalue]'" : null)]"
 
 
 /obj/item/folder/attack_self(mob/user)

code/modules/paperwork/handlabeler.dm

@@ -70,7 +70,7 @@
 	if(mode)
 		to_chat(user, "<span class='notice'>You turn on [src].</span>")
 		//Now let them chose the text.
-		var/str = copytext(reject_bad_text(input(user,"Label text?","Set label","")),1,MAX_NAME_LEN)
+		var/str = reject_bad_text(stripped_input(user, "Label text?", "Set label","", MAX_NAME_LEN))
 		if(!str || !length(str))
 			to_chat(user, "<span class='warning'>Invalid text!</span>")
 			return

code/modules/paperwork/paper.dm

@@ -148,7 +148,10 @@
 		if(istart == 0)
 			return	//No field found with matching id
 
-		laststart = istart+1
+		if(links)
+			laststart = istart + length(info_links[istart])
+		else
+			laststart = istart + length(info[istart])
 		locid++
 		if(locid == id)
 			var/iend = 1