Adding DeviceUtils helper class (for future use)
Revert "Lockscreen Notifications: some fixes"

This reverts commit f837afac8aee2b2bd7c3b3c0c7ca58a50b10545e.

Introduced more bugs rather than fixing anything..
-One bug is gmail app related..When new gmail notification arrives & someone presses 'delete' button...Gmail app opens up.
-SOD complaints