remove unused line
make paperPlay default
use java 7
replace hardcoded configs to conf with ConfigFactory and ConfigClient
implement help
find and use element work
support paper copy and allow key id dual in element
support "this" in paper copy
add Procfile and reduce slug size
update
revert back to paperCore
mobile skeleton
add mobile css and js
route *tail must be nonempty
fix name ambiguity and add clear element
add clear element and paper