ilastik/applets/nanshe/preprocessing/drawer.ui: Add tooltips of temporal and spatial smoothing window sizes.
Fixes #28.
ilastik/applets/nanshe/dataExport/nansheDataExportGui.py: Make preview layer a colortable layer.
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.