Updated the testbeam utils

Many changes in this pull request, definitely not the best way to do things...
Added .gitignore files to ignore unnecessary files
Added directories in the html directories so that they are available by default
Added placeholders for AMC14 and MP7 HW devices
Added placeholders for eventual RCMS implementation (copied from CSC/HCAL)
Added ADCScan routine, and put all testbeam applications into a single xdaq configuration/context
Fixed bug in the relative address table that was preventing the setting of the GLIB SBit to TDC output
Updated some javascript for displaying and refreshing images without page reloads