GPII-226: Eliminated gpii.prefs.pcp_pilot_2 grade, files from PCP reorganised so that pilot2Frames directory is not used.
GPII-226: Update pcp.html demo as well
GPII-226: Removed unnecessary demo directory 'pcp'.
GPII-521: Removed nested forms from HTML markuls, removed some 'important' rules from stylesheets (still a lot remanining though), deleted unneeded comments.