Fixes #26.
ilastik/applets/nanshe/preprocessing/nanshePreprocessingGui.py: Make sure the values of the top level operator are applied even if they are the same as the default values of the GUI on initialization.
ilastik/applets/nanshe/preprocessing/opNansheRemoveZeroedLines.py: Increased the temporal size of the cache.
ilastik/applets/nanshe/preprocessing/opNansheExtractF0.py: Set a minimum length for the cache over time.
ilastik/applets/nanshe/preprocessing/opNansheWaveletTransform.py: Set a minimum block length over time.
ilastik/applets/nanshe/preprocessing/nanshePreprocessingGui.py: Remove Bias checking as this should be triggered through notifications on the slot.