Servers updating and ping detection fixes.

On servers updating when all data successfully gathered we're now
properly updating rows in Servers and Favorites lists.

Increased "simultaneous ping limit" for now, but anyway it provides
too bad results. Need to find a way to fix it.

cachemodels/server.go

@@ -19,6 +19,8 @@ import (
 
 type Server struct {
     Server *datamodels.Server
-    TreeIter gtk.TreeIter
-    IterSet bool
+    AllServersIter *gtk.TreeIter
+    FavServersIter *gtk.TreeIter
+    AllServersIterSet bool
+    FavServersIterSet bool
 }