Updates and Fixes for #166

- Updated Map viewer pin colours
- Added Map Viewer pins to attempt to show neighbouring cells pins in orange
- Added Map viewer check for new cell info, which triggers a map update
- Fixed MCC and MNC not displaying in pin popup dialog
- Added experimental "send bug log" item that  reads logcat output and shares via e-mail. Requires new "READ_LOGS" permission. May not work on KitKat+ due to Android no longer allowing "READ_LOGS" permission.