Varedit remembers search + minor styles (#10393)

Varedit now remembers what was in the 'search' field when you click the 'refresh' link. This makes our miserable lives a little less miserable.
    Tweaked varedit styles ever so slightly: it will now likely use a "better" monospace font depending on what's on your system. Var names are now bold and also monospace.
    The window spawns a tiny bit bigger.

code/modules/admin/view_variables/topic.dm

@@ -521,6 +521,6 @@
 	if(href_list["datumrefresh"])
 		var/datum/DAT = locate(href_list["datumrefresh"])
 		if(istype(DAT, /datum) || istype(DAT, /client))
-			debug_variables(DAT)
+			debug_variables_open(DAT, href_list["search"])
 
 	return