better way to get errors not to screw up tree events
refetch the gist on fork

because the api doesn't return the files as docs say it does
fixes #231
force reload of notebook model for all fork/revert functions

there were bugs lurking... the expense is worth knowing that wysiwyg
also reset session and set cached notebook on create.notebook

we wouldn't want to think we have files we don't have anymore, etc.
reconnect on new and fork

close and reconnect rclient in the same way as on load notebook
fixes #238
artifacts
Merge branch 'develop' of https://github.com/att/rcloud into develop