Update System Settings Description

Shortened and made system settings description more clear.
Revert "Update System Settings Description"

This reverts commit b58587f5c3ef7447bb6c310e5592613b4a74ed2c.
Working on #27 to improve the top menu and de-flatten it, etc.
Still working on #27 … and we have our color #474D61
Replace Dashboard/home button with MODX logo

needs retina graphic still … see #32
Fix #3 and Fix #9 … move logo to topnav for home button and compress the footer height.
Move Action Buttons up closer to narrower header
Fix background on Settings Menu and make sure all icon menus have a title attribute
MInor alignment and transition tweaks
Fix issue #33 in index.css
Update minify. Create folder for cache.
Add debug version of ExtJS
Cleanup manager header tpl
Fix #36 z-index on #modx-footer and drop down top menus
Desaturating Nav Colors

What do you think?
Tree Top Icons back to pngs

loose retina sexiness but tooltips work again
Use applyTo for #modx-footer
Retiny MODX Logo

Used image-sets (ssshhh...)
Desaturating Settings Dropdown

To match the rest
New topnav

Changed color and border on topnav.

TODO: Update hover color on submenu and restyle search field