move source code to src and define searchbar popup

main.kv

@@ -1,5 +0,0 @@
-#:include forestmapview.kv
-
-ForestMapView:
-    orientation: 'vertical'
-    id: forestmapview

src/forestmapview.py

@@ -39,7 +39,6 @@ class ForestMapView(MapView):
     
     def add_tree(self, tree):
         # Create TreeMarker
-        name = tree[0]
         lat, lon = tree[1], tree[2]
         treemarker = TreeMarker(lat=lat, lon=lon)
         treemarker.tree_data = treemarker
@@ -48,5 +47,5 @@ class ForestMapView(MapView):
         self.add_widget(treemarker)
         
         # Keep track of the TreeMarker's name
-        
+        name = tree[0]
         self.tree_names.append(name)