CMAccount : Fix terms of service

Don't allow webview to load redirects via external applications.
Use updated terms of service and privacy policy URLs.

Change-Id: Ib92a86019aa7aff5cf3a2393d8c76eb3376c9571
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_CMAccount into cd-4.4