Add Settings shortcut to Interface Settings Activity

Change-Id: I30a8a16401af0d0e100c867b017a6acc233383d1

Conflicts:
	src/com/android/settings/Settings.java
Expand Profiles [2/2]

This commit expands the profiles power menu entry in the to be
- Always hidden
- Hidden only on the lockscreen
- Always show [not applicable to secure lockscreen]

Change-Id: I325858936a4a7a738307712fc631be9192a98b38