ConfigAddActivity: Rename to AddActivity

Not everything needs to start with Config

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

app/src/main/java/com/wireguard/android/AddActivity.java

@@ -10,11 +10,11 @@ import com.wireguard.config.Config;
  * Standalone activity for creating configurations.
  */
 
-public class ConfigAddActivity extends BaseConfigActivity {
+public class AddActivity extends BaseConfigActivity {
     @Override
     public void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.config_add_activity);
+        setContentView(R.layout.add_activity);
     }
 
     @Override

app/src/main/java/com/wireguard/android/ConfigActivity.java

@@ -169,7 +169,7 @@ public class ConfigActivity extends BaseConfigActivity {
                 onBackPressed();
                 return true;
             case R.id.menu_action_add:
-                startActivity(new Intent(this, ConfigAddActivity.class));
+                startActivity(new Intent(this, AddActivity.class));
                 return true;
             case R.id.menu_action_edit:
                 // Try to make the editing fragment visible.