[mobile] provide method to reload IITC (and clear cache)

fixes 842
[core] tell Android to reload instead of calling location.reload() if running on IITCm

fixes 842
Avoid JS errors
[mobile] ability to clear the log (and always show debug in menu)
[mobile] improve debug view

- ListView should be significantly faster thanks to the ViewHolder pattern
- ability to remove/copy items be long-pressing them