Settings: appwidgetloader...load all providers to do a proper filter

google fixed up the keyguard code in frameworks but did not
adjust in settings the widget filter for it. At least if google
would be consisten they can completly get rid of the filter methods
in settings due that they bypass already the right filter for fetching the
provider now (4.2.2 that was broken). Whatever we do not want
to get rid of it due that we have the show all widgets button
on lockscreen which needs a filtering dependend if the user
pressed the button or not. So fetch all widget providers and
let proper work googles forgoten code

Change-Id: Ic08ce609e19d88e0c849e1050eb75c87c3fe3caa
Revert "Remove note about incoming calls behaving like normal, because this is now optional."

This reverts commit cee28a86a0235699124227ec3f1c860eb148e4ee.

this causes an NPE because of the java still being in tact. A full revert for this feature is required.

Change-Id: I4dfa39379aa1f63c408ee0cb0406464f79ba694b