document pattern matching in data import
support unicode filenames
Merge branch 'master' into issue-661
[data input] whole directory loads all image files in directory, fixes #861
stacks: When passing stack file lists around as strings, use os.path.pathsep as the delimiter instead of '//' or ';'
DataConversion: Updated for Data Export API changes.
workflows: DataConversion workflow is visible by default.
Fixes #942
Merge branch 'issue-661'