fixing multicolor for Im3Dslices
development of STORMrenderBeta: improved color contrasts
adding help file and proper function annotation to MosaicViewer
Added write_dave_xml to Beta
minor updates to filename parsing for STORMfinderBeta
made scalebar a property set just in the image panel, not a part of the image object I.
removed dependence on plotSTORM (everything is plotSTORM_colorZ)
fixed some multi-color contrast issues
more issues with CompZcal on DaoSTORM.  Maybe DaoSTORM should just have tighter outerlimits...
some improvements to STORMrender color contrast handling and other minor tweaks.
automatically correct for different top-to-bottom sequence for calibration stage movement.
Updated STORMfinderBeta to use scratch directory for all temporary files.