Merge branch 'master' of https://github.com/BarryThePenguin/sparkleshare-dashboard into BarryThePenguin-master

Conflicts:
	backend/git.js
	package.json
remove userapp.io support
Merge branch 'BarryThePenguin-master'
Update README.md
Update README.md
Extracting UserProvider configuration to config.js
Merge branch 'master' of https://github.com/kjyv/sparkleshare-dashboard