Merge tag 'v1.1.0'

1.1.0
Fix the demo app
Add simple UI to manage applications
Upgrade Bootstrap and Angular
Fix the push data source configuration

https://github.com/strongloop/loopback-push-notification/issues/30
Improve the UI
Fix typo
Use dynamic properties for dependencies
Move the cleanup to beforeEach/afterEach
Replace example/server with example/demo-server
Update dependencies
Merge pull request #32 from strongloop/feature/fix-issue-30

Fix the push data source configuration
Fix the version
Merge branch 'release/1.1.1' into production