updated sidebar styles and form layout
some more styles
Merge pull request #60 from clrblnd/article-detail-sidebar

Article detail sidebar style updates
Added default mailer layout to installer
small updates
Added collapsible page tree JS module
Merge branch 'topics/collapsible-tree'
Merge pull request #61 from yvesvanbroekhoven/master

Added default mailer layout to installer
Add collapsible page tree JS module
updated form
updated general style chosen element
updated edit view, fieldset.actions
updated edit view, fieldset.actions part 2
Merge pull request #62 from clrblnd/article-detail-sidebar

general style updates to sidebar, basic UI elements etc..
Fixed missing <td> bug in collapsible pages tree JS module
Merge pull request #63 from yvesvanbroekhoven/master

Fixed missing <td> bug in collapsible pages tree JS module
small update to user profile
updated main nav
basic styling update
added dashboard custom widget: stats
updated dashboard, added notes style