Add the computing progress bar.
Make X.parser.reslice2 a real static function rather than calling the X.parser.prototype.reslice2 which looses the this context.
Use the new static functions in the parsers.
Propagate the first volume rendering orientation directly to avoid double calculation.
Latest test.
No errors when activating volume rendering and moving it around.

The progressbar is still not updated yet.
Clean way of showing/hiding the computing progressbar and fire the appropriate callbacks.

Unfortunately, the progressbar does not yet have time to update properly. We need to put more timeouts in the computation loop.
fix 2d scrolling during volume rendering!
Merge branch 'master' into addcomputingprogress
Update volume.js
Merge branch 'master' into addcomputingprogress
Add the X.renderer2D.onSliceNavigation callback which enables modifying sliders etc. when the 2D slice navigators are used.
Show progress during computation for volume rendering (in 25% steps).
Merge branch 'addcomputingprogress'
fix volume rendering bugs:

* slices disappearing on scroll (slicing_)
* more than one direction visible at once (volumeRendering_)
* middle slice not visible (volumeRendeing_)
Fix issue when volume was resliced in 2 directions when we start VR. Should also fix issue when the load bar was not disappearing! All set
wip: fixing CT
Merge branch 'master' into dcmparser
increase timeout for now...
wip: almost there but weird stripes bug