Frameworks: Support advanced lockscreen shortcuts

Lockscreen shortcuts reworked to support advanced targets
like Camera, Phone, Folder in the browser, a contact...
PS2: fixed some copy/paste garbage
PS3: Got -1 from kufikugel for a missing white space before a bracket :p
Change-Id: I15be30d5e2e2ef230bb85e325d5b7bbe7835cff5

Conflicts:
	policy/src/com/android/internal/policy/impl/keyguard/KeyguardShortcuts.java