Disable/Enable screenshot sound [1/2]

Change-Id: I9f32d0026833f9350a2e8e4bedaff3801f508e76
Speed things up!!

Change-Id: If53cba16d5385532fa53d77a829866c082808926
Turn off some debugs

Change-Id: I60ecc6e834277019f467ab69389d0f3da516b2f4
Add MODE_ASK support to AppOps.

Add support for new mode(MODE_ASK) in AppOpsService to show a permission
dialog box to user to confirm user permission before allowing or ignoring
that operation.
All strict operations (defined in AppOpsManager) are going to be in
MODE_ASK by default.
Operations will be moved to MODE_ALLOWED or MODE_IGNORED according to
user's choice.

Change-Id: I8627a7c8e30861586e0e20d72fde25dd199c19b8

Conflicts:
	core/res/res/values/config.xml
	core/res/res/values/strings.xml