Updating changes from 'development' into notification_near
Updating chenges from 'development' into enhancement#21
Controlling MainActivity lifecycle and its interaction with the time picker dialog
Updating changes from 'development' into notification_near
Cancels a countdown notification when disabling a period's alarm
Merge branch 'enhancement#21' into development
Merge branch 'notification_near' into development
Updating about screen and removing unused strings
Updating PT translations
Changing license to Apache 2.0