minor tweaks

added bootstrap, but not responsive

fixed case error in inclusion of datatables css

fixed test bug, now uses HRD

tidy front page

user management servlets moved to JSON output

tidy

added transaction to registration

listing improved, uses cursors

sorted out display somewhat

added json output to GaeUser

removed AOP as its not used, fixed listing bug

simplified base DAO so that objects aren't created automatically, which is very confusing and was a bug

Rename UserDAO to GaeUserDAO

optimized imports