Minor changes
Merge branch 'aravind' into priyan
Added EditEnvironment Activity
Populated Manage Environment Activity
Minor Changes - Edit Env and Add env prevent back button
Changed the Manage environment UI
Has long press to delete environment,
Has different list view
updated the list adapter
Merge branch 'aravind'

Conflicts:
	app/src/main/AndroidManifest.xml
	app/src/main/java/com/pvsagar/smartlockscreen/applogic_objects/Environment.java
	app/src/main/java/com/pvsagar/smartlockscreen/applogic_objects/WiFiEnvironmentVariable.java
Changes in ManageEnvironment for lesser database accesses.