TEMP workaround for #9813
Image marshal includes zoomLevelScaling
viewport.js $ viewportImage.js pass zoomLevelScaling down to PanoJS
PanoJS handles zoomLevelScaling - default is still 50%
Add PyramidService.getResolutionDescriptions method (See #9813)

Provide a list of ResolutionDescription objects which should
eventually represent the entire geometry of the tiled plane.
Use zoom scaling levels from server
Close the connector when the group is closed.
Register event
Change logging level to error on exception being thrown
Replace close by _del()_ and add null check
Close the reader when the import is done (see #10249)
Do not interrupt thread (see #10116)

As a general rule, Ice for Java does not work well in the
presence of thread interrupts.
see
http://www.zeroc.com/forums/help-center/
5057-ice-java-exception-ice-thread-pool-client.html
Pass the loader's id so it is removed from the map.
Pass loader id. Fix all calls.
Refactor code so no copy of settings is kept.
Set the current group correctly (see #10334)
Add doc.
Do no allow to add files to queue when loading data.
Fix import of plate and link to screen (see #10322)

The problem only occurs when a folder is selected and the
folder contains a plate and a non plate file.
Fix loading of data (see #10333)