optimise station database by stripping unused info

UI/StationSuggestionProvider.cs

@@ -0,0 +1,19 @@
+using System.Collections;
+using AutoCompleteTextBox.Editors;
+using NonaBGS.EDDB;
+
+namespace NonaBGS.UI {
+    public class StationSuggestionProvider : ISuggestionProvider {
+        private int system_id = 0;
+        private Stations stations = null;
+
+        public StationSuggestionProvider(Stations stations, int system_id) {
+            this.system_id = system_id;
+            this.stations = stations;
+        }
+
+        public IEnumerable GetSuggestions(string filter) {
+            return stations.StationNamesBySystemId(system_id, filter);
+        }
+    }
+}