Improvements to the IOIO configuration activity
1. Fix printing of text "Pin" on some screens
2. restore selected pin number, after returning from pin customization
activity
3. display custom pin name (as will be shown in pitside) on the
configureIOIO activity
4. add custom pin name to the pin list at the bottom of the IOIO
activity
Merge pull request #30 from wonder99/master

Improvements to the IOIO configuration activity