tomo: Make sure some scans was received when requesting tomovis
(cherry picked from commit 048d03f3)
Closes daiquiri-tomo#75 (closed)
This MR add filter before triggering tomovis reconstruction.
Instead of always triggering tomovis, it is only done if at least a tiling scan was started.
Filtering the reconstruction when the tiling sequence fails is not a good idea, because something still can be reconstructed from an uncompleted scan.