Merge pull request #719 from mtbc/fix-simplepci-link

fix SimplePCI links in documentation
Merge pull request #717 from melissalinkert/nd2-channel-color

ND2: only populate the channel color if it is non-zero
merge dev_4_4 -D org -I include -E exclude: PR 673 (Make configuration file suffix configurable)
merge dev_4_4 -D org -I include -E exclude: PR 710 (Data test updates (rebased onto dev_4_4))
merge dev_4_4 -D org -I include -E exclude: PR 711 (ImageConverter: fix dimensions of the last tile)