data transfer: allow to save, delete files from conversation

Change-Id: I0087aa1e241358b41b79e21327fc2c699a54490b
diff --git a/ring-android/app/src/main/res/values/strings.xml b/ring-android/app/src/main/res/values/strings.xml
index e5af8ca..a1d3480 100644
--- a/ring-android/app/src/main/res/values/strings.xml
+++ b/ring-android/app/src/main/res/values/strings.xml
@@ -242,5 +242,7 @@
     <string name="file_saved_in">File saved in %s</string>
     <string name="no_space_left_on_device">No space left on device</string>
     <string name="title_media_viewer">Media viewer</string>
+    <string name="menu_file_download">Download file</string>
+    <string name="menu_file_delete">Delete file</string>
 
 </resources>