Implement the TalkillaSPASetup class
Open an iframe when setting up the Talkilla SPA
Listen for the SPA enabling from the iframe
Remove dead code
Fix functional tests
Tests: wait for the signin button to appear
Sidebar: explain why we catch every window message
Merge branch 'master' into iframe-login
Fix JSHint errors
Address pull request comments
Remove the setup link: load the iframe from the beginning
Improve the iframe destruction and creation flow
Fix tests
Merge pull request #332 from tOkeshu/iframe-login

Talkilla SPA setup via iframe