Removed the gradle import of EnhancedListView.
EnhancedListView is now a local library, not imported via gradle. This means we can make changes to it.
Pulled in changes from my fork of this library (https://github.com/villepetersson/EnhancedListView).
Booleans are hard.
Now possible to undone tasks by swiping them to the left.
Merge branch 'feature/enhancedlistviewfork' into develop
Merge branch 'develop' of github.com:villepetersson/DAT255-Grupp12 into develop