New send button icon and small mixin UI tweaks

- New send button icon

- remove double border between mixins

- match background color of collapsible headers (mixin__name) with
headers in Chrome inspector

- match disclosure triangle color with Chrome inspector and add some
white space
Merge pull request #67 from nummi/master

New send button icon and small mixin UI tweaks
fix highlightedElment when page direction is rtl
Upgrade to Ember 1.0
Merge pull request #71 from zoghal/fix-highlightedElement-in-rtl

fix highlightedElment when page direction is rtl
View tree UI improvements
Add magnifying glass to inspect views on hover
View tree: add options to  show components and all views

Also added the ability to inspect a view's DOM element by clicking on its template

Done with @twokul
Show views and components in preview layer
Update tests to new features and fix bug with private view properties
Drop objects when destroyed
Better filtering of views when highlighting on hover
Accounts for view not having an element when highlighting

Fixes #65
Change min-width to 1200px
Merge pull request #49 from tekay/master

Allow app__main to shrink when app__right-col is expanded
Add name column to view tree and hide virtual views
Merge pull request #63 from tildeio/view-tree

View tree improvements
Account for document.body being absent.
Merge pull request #72 from eventualbuddha/account-for-null-document-body

Account for document.body being absent.