mergeword mainly done, cancal operation needs improvement
merge word cancel keynav refocus bug fixed
splitword code organization prettified
utility functions move out of coarse.js
encoding tagging result into json
coarse annotation post done
js styles moved to assets
history page done, hand annotation url reformated
after posting a annotation result, activate another annotating round + more tags available
StringProperty too short for annotation result, changed to TextProperty
tag display name conflict(Predix and pOstfix) fixed