Bug 835134 - Modify Privacy & Security Preferences UI to reflect recent backend additions. ui-r=Neil, r=IanN.

--HG--
rename : suite/common/pref/pref-security.js => suite/common/pref/pref-privatedata.js
rename : suite/common/pref/pref-security.xul => suite/common/pref/pref-privatedata.xul
rename : suite/locales/en-US/chrome/common/pref/pref-security.dtd => suite/locales/en-US/chrome/common/pref/pref-privatedata.dtd