Merge pull request #9413 from Ty-Omaha/button

Adds a Discord button & stylizes the Karma Shop and Donate buttons

code/controllers/configuration.dm

@@ -85,6 +85,7 @@
 	var/githuburl = "http://example.org"
 	var/donationsurl = "http://example.org"
 	var/repositoryurl = "http://example.org"
+	var/discordurl = "http://example.org"
 
 	var/overflow_server_url
 	var/forbid_singulo_possession = 0
@@ -388,7 +389,10 @@
 
 				if("githuburl")
 					config.githuburl = value
-
+				
+				if("discordurl")
+					config.discordurl = value
+				
 				if("donationsurl")
 					config.donationsurl = value
 
@@ -782,4 +786,4 @@
 		if(M.can_start())
 			runnable_modes[M] = probabilities[M.config_tag]
 //			to_chat(world, "DEBUG: runnable_mode\[[runnable_modes.len]\] = [M.config_tag]")
-	return runnable_modes
+	return runnable_modes