Settings: Hide Development settings when it is turned off

This commit hides the Development and Performance settings items
when the user turns off Development settings. This sets things back
to tapping x number of times on the build number to once again enable
developer settings

Change-Id: I6003f73f5abee54bb000f01757ecffe7b68dba59

Settings: Make Perf settings act just like dev setting - start hidden

The Performance settings should not show until the owner of the
device enables development options, guest users should not be able
to turn it on.

Change-Id: Ib08d29bfd92ad44c71d02c115e12064ddf4704e0

Conflicts:
	src/com/android/settings/DevelopmentSettings.java