Fix lock screen timeouts

- Currently, if slide lock delays are enabled and then user switches to a secure lock screen, the slide delays were still being utilized
- This patch fixes the logic around whether to utilize the slide delay setting

Change-Id: I44d8b8dcb04468ca069c7967a753038090d34133
Lockscreen : Hide clock for Chronus/DeskClock

Hide statusbar clock if chronus or the DeskClock widgets
are being displayed

patch set 2 : Add check for Alarm clock widgets
Patch set 3 : Add null checks to be safe
Patch set 4 : More null checks
Patch set 5 : Removed null checks again

Change-Id: I083870b818b6257a3fbdb676c545945438c42fd7
Merge "Lockscreen : Hide clock for Chronus/DeskClock" into cm-10.1
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1