Allow specifying the webcpanel template directory directly.

There's no need to hardcode a base path here.

data/modules.example.conf

@@ -774,8 +774,11 @@ module { name = "sasl" }
 	/* Web server to use. */
 	server = "httpd/main";
 
-	/* Template to use. */
-	template = "default";
+	/*
+	 * The directory containing the webcpanel templates. This is relative to the
+	 * data directory.
+	 */
+	template_dir = "webcpanel/templates/default";
 
 	/* Page title. */
 	title = "Anope IRC Services";