Reorganize administrator menus

Modify the administrative menus in order to:

• reduce confusion - especially understanding the differences between Customize, Configure and Manage
• reduce the # of clicks to get to any admin option
• clarify language a bit
  Upgrade will rebuild admin menu items and put out an alert to users that the admin menu has been updated.

New layout is here.
http://civicrm.org/sites/civicrm.org/files/ProposedAdminMenu.PNG

We'll incorporate the suggestions (comments) on the blog post as well.
http://civicrm.org/blogs/dave-greenberg/improving-civicrm-administration-menu