Fixed views to not use 'json' as a variable name

Otherwise is causing a name clash due to using the standard 'json'
python library now.
Allowing all JSon API calls to be either POST or GET

Also changed the donation processing pages to use POST
Added other JSon API methods to admin url space
Preparing for more dynamic processing pages
Merge branch 'master' into dynamictasks
First stage modifications for dynamic processing pages
Merge branch 'prizeschemamod' into dynamictasks
Integrated prize schema modifications to prize processing
Added filters for prize state.