After upgrading to CiviCRM 4.7, several CiviCRM related pages/functions on my site are not working and reporting errors related to CRM.$ not being defined as a function, but I can't find where it should be originally defined. Jquery appears to be loading and working okay. Also, when I access the 'CiviCRM » Administer CiviCRM » System Settings » Directories' page, only the core menu is displayed without any css formatting. None of the directories options are displayed so I can't verify/change them. Three, ReferenceError: CRM is not defined errors are reported for the page.