Add possibility to display mobile data used in network info

[felagund]

Network info can show a lot of information, but not the one I care about. I am on a tight data plan and I would like to be able to see on t-ui homescreen the amount of data I have used in this billing period. Basically something analogous to this: https://play.google.com/store/apps/details?id=com.roysolberg.android.datacounter&hl=cs

Could it be please added?

[geomach]

This can be effectively intergrated

[geomach]

just by adding custom widget