Offline support. No. Really. Meh

Copy and paste codes from the closed PR.

Anyway, there is something I am curious about. Let's look at the screenshot. 

This is Menu at what we really see when we open the app.

![Normal](http://f.cl.ly/items/1I3D0S3N380j2i1w0Q18/UCL_menu.png)

This is Menu at what we see when we open the Navigation drawer .

![Normal](http://f.cl.ly/items/2A241k3E060p0N133A0H/UCL_Navdrawer_open.png)

It is what it is because "About" menu in the action overflow is in the Activity and "Refresh" is in the Fragment. Are you satisfied with the behavior and arrangement with that ?