[image_view2] Use parameter to change mode to select rectangle or
freeform trajectory instad of "SHIFT KEY"
Merge remote-tracking branch 'refs/remotes/origin/master' into use-parameter-to-change-interaction-mode
Merge remote-tracking branch 'refs/remotes/origin/master' into use-parameter-to-change-interaction-mode
Merge pull request #653 from garaemon/use-parameter-to-change-interaction-mode

[image_view2] Use parameter to change mode to select rectangle or freeform trajectory instad of "SHIFT KEY"