Code cleanup - most notably BitmessageService was cleaned up and doesn't use messaging anymore

app/src/main/java/ch/dissem/apps/abit/MessageDetailActivity.java

@@ -27,6 +27,7 @@ public class MessageDetailActivity extends AppCompatActivity {
         final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
         // Show the Up button in the action bar.
+        //noinspection ConstantConditions
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
 
         // savedInstanceState is non-null when there is fragment state