updated java doc comments
Updated the playground preview servlet to use the POST-redirect-GET
pattern
removed the Sample - Add Remove Tag.jsp
Updates to stand-alone Java samples
Generic Promise implementation
Add new request method which will return a Promise
Merge remote-tracking branch 'origin/master'
Add new request method which returns a Promise
Merge branch 'master' of https://github.com/OpenNTF/SocialSDK.git into GadgetOauth