work with poor indexedDB browsers #404
update Saucelabs browser test array
v 0.5.3
noflo-runtime: Allow custom url for iframe runtimes

Requires grunt-noflo-browser 0.1.9+ and latest noflo-runtime-iframe
to be added as dependency to project.
Add support for sndflo/SuperCollider

https://github.com/jonnor/sndflo
graph-inspector: Fix unable to change runtime type

previewEditor is optional, only present for noflo-browser
Routines moved to UserStorage
RefreshToken in UserStorage
Expiration token countdown
Merge branch 'master' of https://github.com/noflo/noflo-ui
No more files to build
No trailing slash for authorize endpoint