Merge pull request #39 from b0oh/rest

JSON implementation for rest handler
wf_secret
remove update action. switched to jq action
compact redirect
compact utils
fix build
structure of actions
fix pickling
elements cleanup
LOC below 2800
docs
remove action_redirect. implemented throught jq
events simplified
actions doc
new lightweight handlers without behaviours
pickles moved to handlers
compactify DOM updates
handlers are not depended on endpoints
added yaws endpoint
move put rest handler to rest endpoint