Feature enable notification dropdown

Added the isSecure method hook for the keyguard & settings to allow for notification dropdown while on the swipe lockscreen, and to allow for modifying the settings for the swipe screen.

Also fixed the gradle build for the xposed jar - changed it to 'provides' instead of 'compile' in the dependencies so that it doesn't include in the apk.

BTW - this is my first time using android studio and/or gradle, so the app.iml was modified and I have no idea if it's right or not - it's just what the tooling did...