Version 2.1.0 update

Android 5.0 support; Lockscreen check in BroadcastReceiver; Fixed
'Activity restart when tag added' bug; Refreshed launcher icons and UI
components; Added Alarm receiver in LockActivity; Removed
TutorialActivity and it's components; Optimised layouts and fixed
warnings; Added contentDescriptions to images and ImageButtons;
Portuguese (Brazil) translation; Toolbox now hidden and animates from
bellow using 'Up' ImageButton or gestures; Added Phone and Camera
buttons on lockscreen.