Merge voting controller into SSvote (#2183)

changes:

Merged the voting controller into the voting subsystem.
Changed the voting UI to use /datum/browser.
Converted /datum/browser to use HTML5 & attempt to use edge if available. All users of the browser datum have been confirmed functional with Edge.
Changed the ChemMaster to use SSassets for resource download.

code/modules/client/asset_cache.dm

@@ -210,3 +210,22 @@ var/list/asset_datums = list()
 		"changelog.css" = 'html/changelog.css',
 		"changelog.js" = 'html/changelog.js'
 	)
+
+/datum/asset/chem_master
+	var/list/bottle_sprites = list("bottle-1", "bottle-2", "bottle-3", "bottle-4")
+	var/max_pill_sprite = 20
+	var/list/assets = list()
+
+/datum/asset/chem_master/register()
+	for (var/i = 1 to max_pill_sprite)
+		var/name = "pill[i].png"
+		register_asset(name, icon('icons/obj/chemical.dmi', "pill[i]"))
+		assets += name
+	
+	for (var/sprite in bottle_sprites)
+		var/name = "[sprite].png"
+		register_asset(name, icon('icons/obj/chemical.dmi', sprite))
+		assets += name
+
+/datum/asset/chem_master/send(client)
+	send_asset_list(client, assets)