Favorites and fixes.

Favorites functionality done, except editing favorite server.
Note, that game profile defined for favorite server have
higher priority on normal profile selected in combobox near
"Launch!" button. Later WILL be ignored.

Bunch of fixes is added.

database/database_object.go

@@ -65,12 +65,48 @@ func (d *Database) Migrate() {
 
 func (d *Database) UpdateServers(data map[string]*datamodels.Server) {
     fmt.Println("Updating servers information in database...")
-    // ToDo: real update :)
-    d.Db.MustExec("DELETE FROM servers")
+    raw_cached := []datamodels.Server{}
+    d.Db.Select(&raw_cached, "SELECT * FROM servers")
+
+    // Create map[string]*datamodels.Server once, so we won't iterate
+    // over slice of datamodels.Server everytime.
+    cached_servers := make(map[string]*datamodels.Server)
+    for s := range raw_cached {
+        mapping_item_name := raw_cached[s].Ip + ":" + raw_cached[s].Port
+        cached_servers[mapping_item_name] = &raw_cached[s]
+    }
+
+    new_servers := make(map[string]*datamodels.Server)
+
+    // Update our cached mapping.
+    for _, s := range data {
+        mapping_item_name := s.Ip + ":" + s.Port
+        _, ok := cached_servers[mapping_item_name]
+        if !ok {
+            fmt.Println(mapping_item_name + " not found!")
+            new_servers[mapping_item_name] = s
+        } else {
+            cached_servers[mapping_item_name].Ip = s.Ip
+            cached_servers[mapping_item_name].Port = s.Port
+            cached_servers[mapping_item_name].Name = s.Name
+            cached_servers[mapping_item_name].Players = s.Players
+            cached_servers[mapping_item_name].Maxplayers = s.Maxplayers
+            cached_servers[mapping_item_name].Ping = s.Ping
+            cached_servers[mapping_item_name].Map = s.Map
+            cached_servers[mapping_item_name].Gamemode = s.Gamemode
+        }
+    }
+
     tx := d.Db.MustBegin()
-    for _, srv := range data {
+    fmt.Println("Adding new servers...")
+    for _, srv := range new_servers {
         tx.NamedExec("INSERT INTO servers (ip, port, name, ping, players, maxplayers, gamemode, map, version) VALUES (:ip, :port, :name, :ping, :players, :maxplayers, :gamemode, :map, :version)", srv)
     }
+    fmt.Println("Updating cached servers...")
+    for _, srv := range cached_servers {
+        tx.NamedExec("UPDATE servers SET name=:name, players=:players, maxplayers=:maxplayers, gamemode=:gamemode, map=:map, version=:version WHERE ip=:ip AND port=:port", &srv)
+    }
+
     tx.Commit()
     fmt.Println("Done")
 }