carving: fix save/save as and more cleanup
carving: allow to overwrite current object with the same name
label list view: initialize dialog, fixes #474
minor: cleanups
add a failing test for a maximal number of labels
Look in all time slices for the maximum label.
Helpful tooltips and better layer names for the thresholding applet
replace op5ifyer with OpReorderAxes in object classification workflow
change constraints check to not constrain channel dimension
carving: tmp fix for computation being triggered directly after loading
the data

see issue #494
thresholding gui improvements
intermediate results checkbox
Connect cached predictions slot in pixel classification, connect thresholding applet to PredictionProbabilities slot.

amend the previous
OpThresholdTwoLevels: Use a cache to request labels in the single-level threshold operator.
(Ensures that the entire volume is computed instead of a single tile.) Fixes #485.
shell, applet api changes:
- Applet Gui objects must have a setEnabled() method (which most applets already have)
- shell: Added a workaround for QToolBox behavior that caused applet drawers to be opened automatically at the wrong times.
- shell: All applet guis must adhere to AppletGuiInterface again.
Carving: Re-enabled 3D segmentation view by default.
convert min and max coords to int
make a different colortable for probabilities
Carving: Keep track of whether or not there seeds currently loaded into the labeling cache, and use this to determine whether or not the project file is dirty.
Fixes #476
manual tracking: fixed export bug