Do not refresh notes on hidden tabs
Refresh notes when the page becomes visible
Add document.hidden improvement to CHANGELOG
Merge branch 'refresh_unless_hidden' into 'master'

Refresh Notes unless the tab is hidden
Add link to slack docs.
Merge branch 'slack-doc-readme' into 'master'

Slack doc readme
Make import docs more prominent.
Merge branch 'import-check' into 'master'

Import check

/cc @dzaporozhets
Import rake task documentation in separate file.
Merge branch 'forgot-import-readme' into 'master'

Forgot import readme

/cc @dzaporozhets
Make clear that notes also serve as comments.
Merge branch 'notes-are-comments' into 'master'

Notes are comments
Merge branch 'master' of github.com:gitlabhq/gitlabhq