Renamed resizable property with resizable chart.

Probably conflicting with resizable property of component that
initialize resizer object.
Moved Charts*Config.js to demo app folder.

I have done this for problems with Sencha CMD on building app.
Added initial mobile charts RPie sample (not work correctly for now)

The desktop version already work
Trouble with Sencha CMD build

I have added a function called only if highcharts is initialized to add
rpie serie to highcharts series.