Add file size limit to zip creation for datasets. Update translations.

See merge request !34

Resolve "Download all files in dataset (web UI)"

Closes #69

See merge request !33

Resolve "servlet for dataset file list to support use of download script"

Closes #73

See merge request !32

servlet)

Resolve "servlet for dataset file list to support use of download script"

Closes #66

See merge request !30

Resolve "Log translation string save bug"

Closes #71

See merge request !29

Resolve "Consistency in UI for datafile and datasets."

Closes #74

See merge request !31

datafiles

disposition with curl compatible filename. Let user know if dataset ID
is missing

Resolve "(My Files view) Show which datasets files are attached to"

Closes #62

See merge request !28