Increase size of clickable area for the reload buttons

Both for upcoming news and twitter data.

Change-Id: If11daecce30f3b4bc36e9210afeed08f52d08b85
Reviewed-by: Caroline Chao <caroline.chao@theqtcompany.com>
Add a "no cached data" message when no data is available

Used for offline mode.

Change-Id: Ie09b53c0a084d17de33d63f05a9e3a96a6427599
Reviewed-by: Caroline Chao <caroline.chao@theqtcompany.com>