Issues/810 update icons tabbar, toolbars, and blog picker. Updates post options.

Update Tab Bar icons: Update the tab bar icons to the final versions and adjust the order.
Updates format bar background color. 
Updates tab bar icons and icon color for the editor 
Updates tab bar icon color for comment moderation in notifications.
Updates the icon used for the blog picker.
Misc layout improvements to the post options screen.

Refs #810 
After:
![screen shot 2013-12-13 at 2 13 12 pm](https://f.cloud.github.com/assets/1435271/1745736/0d730eae-6433-11e3-9ebe-9345e13531d3.png)