Refresh token, if a scope has not been supplied in request then leave the scope equal to the scope originally granted
Merge https://github.com/hiidef/oauth2app into develop
Merge pull request #26 from trezorg/develop

if a scope has not been supplied in request then leave the scope equal to the scope originally granted
Made AccessRange.key length configurable
Merge pull request #31 from mk-fg/configurable_scope_key

Made AccessRange.key length configurable
Prefer simplejson, but fall back to json
Merge https://github.com/hiidef/oauth2app into develop