Big image birdeyeview (rebased onto develop)



This is the same as gh-940 but rebased onto develop.

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Fix:
 * Birds eye position: https://trac.openmicroscopy.org.uk/ome/ticket/10477
 * Selection while loading: https://trac.openmicroscopy.org.uk/ome/ticket/10572
 * Mouse wheel: https://trac.openmicroscopy.org.uk/ome/ticket/10575
 * Selector stuck: https://trac.openmicroscopy.org.uk/ome/ticket/10554
 * Resolution level: full zoom out https://trac.openmicroscopy.org.uk/ome/ticket/8475
 * Shut down RE when idle: https://trac.openmicroscopy.org.uk/ome/ticket/10579
     * To test open an image, do not interact with viewers, after 5/6 mins check the log. The rendering should be closed. Interact with the viewer, The RE is reloaded.