Added FINE_LOCATION permission checks. Added location update and save logic.

app/src/main/res/menu/main_menu.xml

@@ -1,22 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <item
+        android:id="@+id/update_location"
+        android:title="@string/menu_update_location" />
     <item
         android:id="@+id/fetch_trans"
-        android:title="Fetch Transmitters" />
+        android:title="@string/menu_fetch_transmitters" />
     <item
         android:id="@+id/save_to_db"
-        android:title="Save to DB" />
+        android:title="@string/menu_save_to_db" />
     <item
         android:id="@+id/load_from_db"
-        android:title="Load from DB" />
+        android:title="@string/menu_load_from_db" />
     <item
         android:id="@+id/fetch_tle"
-        android:title="Fetch TLE" />
+        android:title="@string/menu_fetch_tle" />
     <item
         android:id="@+id/load_tle"
-        android:title="Load TLE" />
+        android:title="@string/menu_load_tle" />
     <item
         android:id="@+id/action_exit"
-        android:title="Exit" />
+        android:title="@string/menu_exit" />
 </menu>

app/src/main/res/values/strings.xml

@@ -22,6 +22,14 @@
     <string name="height_def">64</string>
     <string name="height_summary">Ground station height in meters AMSL</string>
 
+    <string name="menu_update_location">Update location</string>
+    <string name="menu_fetch_transmitters">Fetch Transmitters</string>
+    <string name="menu_save_to_db">Save to DB</string>
+    <string name="menu_load_from_db">Load from DB</string>
+    <string name="menu_fetch_tle">Fetch TLE</string>
+    <string name="menu_load_tle">Load TLE</string>
+    <string name="menu_exit">Exit</string>
+
     <string name="next_aos_pattern">Next AOS in %02d:%02d:%02d</string>
     <string name="map_content">Nasa Map</string>
     <string name="placeholder">Placeholder</string>