Remove the SelectionMover class and associated code

The removed tests have been superseded by SelectionController tests covering
the same functionality.
Migrate SelectionMover.createPositionIterator to OdtDocument

Remove the SelectionMover file entirely as it no longer contains any
functionality.
Merge pull request #730 from peitschie/selectionmover-cleanup

Remove superseded SelectionMover class
Screen blanking for presentations + additional hotkeys for navigation
Only support blankout in presentation mode

Also:
* no navigation in blankout mode
* leave blankout when presentation mode is left (e.g. by browser on ESC)
Support more API variants to enter/leave fullscreen (with input support)
Merge pull request #751 from kossebau/presentationBlanking

Presentation blanking (or: stealing #556)
Add UI buttons for list creation
Add list controller and responding to cursor events
Operations for adding and removing lists

These operations work on the level of top level lists only
Operational transforms for adding and removing lists

This handles adding lists of the exact same range and removing the same list or
different lists. Adding lists of intersecting ranges returns and
unresolvable conflict atm.
Tests for add and remove list operations