eslint-config-etherpad 1.0.11 changed the comma-dangle rule to
prohibit trailing commas for function arguments. See:
673ab07acf
Re-run the automated fixes to apply the rule change.
This also fixes a few lint issues in changes that were made after
`eslint --fix` was originally run.
This is a followup on 312c72c364, which did the same on the main code base,
and is preliminary work for tidying up John's changes in the following commits.
No functional changes.
Command:
find tests/frontend -name '*.js' -type f -print0 | xargs -0 sed --in-place 's/[[:space:]]*$//'
