Implemented client_serverlist module! Close #200

* Will store servers that are not already in the list when logging in
* Can add servers manually if required too
* Fixed a bug in table.size

data/styles/10-buttons.otui

@@ -66,4 +66,18 @@ PreviousButton < UIButton
     image-clip: 0 21 12 21
 
   $disabled:
-    image-color: #ffffff55
+    image-color: #ffffff55
+
+AddButton < UIButton
+  size: 20 20
+  image-source: /images/ui/icon_add
+  image-color: #ffffffff
+
+  $hover !disabled:
+    image-color: #ffffff99
+
+  $pressed:
+    image-color: #ffffff44
+
+  $disabled:
+    image-color: #ffffff55