Metamorph: clean up image names for plate data
Metamorph: correct image names for multiple series per position
Metamorph: use the stage position index in the image name

...instead of the series index.
Adjust available memory based upon the thread count
fix SimplePCI links in documentation
ND2: only populate the channel color if it is non-zero

Setting the channel color to 0 (i.e. black) can prevent the images from
displaying correctly when the color-appropriate lookup tables are applied.
Merge pull request #718 from melissalinkert/big-image-oom

Data tests: adjust memory calculations based upon thread count
Merge pull request #720 from mtbc/rebased/develop/fix-simplepci-link

fix SimplePCI links in documentation (rebased onto develop)
Merge pull request #708 from melissalinkert/rebased/develop/metamorph-image-names

Metamorph image names (rebased onto develop)
Merge pull request #721 from melissalinkert/rebased/develop/nd2-channel-color

ND2: only populate the channel color if it is non-zero (rebased onto develop)