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
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_frameworks_base into cm-10.1-n7