Update logo and logo-mini
Save articles (incomplete)
Use email as author's name in FileStore

Since there is no other personal details other than
email in Mozilla Persona architecture (BrowserId authentication)
Move changelog item to context menu as history
Move view, edit, raw items into the context menu
Start fixing links in sidebar
Make warnings and notices closable with jQuery
Move warning, notice messages to the top of editor
Rename changelog to history
Complete rename of changelog to history
Minor adjustment to header size in history
Show correct `last modified` information
Make it possible to preview changes
Remove redundant validation of comment field
Extract toUnix func into Utils.TextUtils module
Extract style for Ace Editor into wiki.css
Move acidjs style into static css file
Minor title change in article preview
Align style of form controls in article edit
Fix issue with disappearing article content