Workaround for bug that prevented editing vCards with commas in the address

[hanzi]

This is a workaround that fixes #1009
(also fixes #1313)

Without it, contacts whose address contains a comma (quite common in Asian addresses) cannot be edited in the web interface.

I am aware that this is actually an upstream bug (kewisch/ical.js#386) and should be fixed there... but that PR is about 10 months old and it is unclear when it might be merged and tagged. Meanwhile, this leads to very poor user experience in the Contacts app.

This fix would not conflict with that upstream PR since it merely makes it explicit that LABEL cannot contain multiple values.

[codecov]

Codecov Report

Merging #1394 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1394   +/-   ##
=======================================
  Coverage   62.31%   62.31%           
=======================================
  Files           4        4           
  Lines          69       69           
=======================================
  Hits           43       43           
  Misses         26       26

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[skjnldsv]

As mentioned in #1393 (comment)
Please put those patches in another dedicated file :)

[hanzi]

@skjnldsv I have now tried to re-use the existing flow for updating the design set and extracting it into its own service.

I will update #1393 once this is merged.

[caugner]

@hanzi FYI The PRs in ical.js have been merged, so the next ical.js version will include the fixes.