cleaned up error messages, began adding battery monitor for sled, modified error handling during scanning so that erroneous books highlight in red for easy access.

Fixed bug where app would crash on reaching error; cleaned up scan history parsing by implementing Jake's JSON stuff; rearranged code to increase robustness - app now has basic capability to determine when it has failed with no hope of recovery (aka if PLUC RTI webpage changes)

Continuous scanning tested and working.  Also fixed bug where app would crash upon return from settings page to scan page

initial system integration largely complete - just some minor tweaks for tomorrow.  here goes nothing.

replaced SectionTableViewController with SectionViewController, added GlobalWebController and connected global webview to SectionView and ScanBookView

Updated SDK Demo app with cleaner interface, added beep option (to show ability to customize sled settings)

Anthony: finally got scanner working.  Was missing three lines in Build Info.  Hopefully won't have to play this game again moving forward.