Merge topic 'fix_backspace_cocoa_keysym' into release

0a6eb5d5 Doc: Adding .md file
55d13873 Cocoa: Fix BackSpace keysym as it was incorrect

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Acked-by: Sean McBride <sean@rogue-research.com>
Reviewed-by: David Gobbi <david.gobbi@gmail.com>
Merge-request: !11738