Lock screen: Toggle Camera widget, (2/2):

Based on OmniRom:
https://github.com/omnirom/android_packages_apps_OmniGears/commit/9d108f7cab1e72d506367450320109055940d19c

Disable lock screen camera widget,
when lock screen widgets are disabled.
Enable/disable Lock screen camera widget
via checkbox when lock screen widgets are enabled