Merge pull request #769 from mtbc/ellipses

use Unicode ellipses
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 746 (CellWorx: ignore thumbnails and missing channel names)
merge dev_4_4 -D org -I include -E exclude: PR 768 (Improve bfCheckJavaPath performance testing (rebased onto dev_4_4))