Abbreviate to ccdParams and ccdPyramid

* timestream/manipulate/pipecomponents.py (ColorCardDetect.__call__): We should
not abbreviate the variables that are used in the configuration file:
colorcardTrueColors, colorcardFile, colorcardPosition.... Since colorcardParams
and colorcardPyramid are not in the config file, we should abbreviate.
Remove writeImage.

* timestream/manipulate/pipecomponents.py (ImageColorCorrector): Remove
writeImage variable; it was unused and unnecessary. It is replaced by the
ResultingImageWriter component.
Avoid replacing the image in pipecomponents

* timestream/manipulate/pipecomponents.py (PlantExtractor.segAllPots): Just
assign mask for each ImagePotHandler. Do not replace the image in
TimeStreamImage.
(ResultingImageWriter.argNames): Add new argument "masked". When this arg is
True the component will try to write the image with its masked.
(ResultingImageWriter.__call__): Use ImagePotHandler.getImage to create the
resulting written image. Remove putStatsAllPots.
* timestream/manipulate/pot.py (ImagePotHandler.getSegmented): Refactor the
logic that replaces current mask with previous mask.