disable file imports when running on external server

[kecnry]

Description

This pull request disables "From File..." options for importing catalogs and footprints from a file in cases where jdaviz is running on an external server.

Change log entry

• Is a change log needed? If yes, is it added to CHANGES.rst? If you want to avoid merge conflicts,
  list the proposed change log here for review and add to CHANGES.rst before merge. If no, maintainer
  should add a no-changelog-entry-needed label.

Checklist for package maintainer(s)

This checklist is meant to remind the package maintainer(s) who will review this pull request of some common things to look for. This list is not exhaustive.

• Are two approvals required? Branch protection rule does not check for the second approval. If a second approval is not necessary, please apply the trivial label.
• Do the proposed changes actually accomplish desired goals? Also manually run the affected example notebooks, if necessary.
• Do the proposed changes follow the STScI Style Guides?
• Are tests added/updated as required? If so, do they follow the STScI Style Guides?
• Are docs added/updated as required? If so, do they follow the STScI Style Guides?
• Did the CI pass? If not, are the failures related?
• Is a milestone set? Set this to bugfix milestone if this is a bug fix and needs to be released ASAP; otherwise, set this to the next major release milestone. Bugfix milestone also needs an accompanying backport label.
• After merge, any internal documentations need updating (e.g., JIRA, Innerspace)?

[kecnry]

NOTE: I'm not sure if the auto backport will still work for 3.10.x, if it does not, we can manually backport there (probably will be a changelog conflict anyways due to the 4.0.x changelog entry not existing).

[pllim]

Actually do we want to advertise this?

[kecnry]

it'll be in the PR history regardless 🤷‍♂️

[pllim]

If you insist on change log, I think also need entry under 4.0.x section.

[kecnry]

there is (this one you're commenting on is 4.0.1, the other one is 3.10.4)

[pllim]

p.s. Are these the only ones we need to block? Any others?

[kecnry]

these are all. @gibsongreen can follow the same pattern when implementing subset importing.

[pllim]

Okie dokie then. Feel free to merge. Thanks for the quick fix!

cc @havok2063

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.63%. Comparing base (f5b3a1d) to head (d09fabd).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3239   +/-   ##
=======================================
  Coverage   88.62%   88.63%           
=======================================
  Files         125      125           
  Lines       18775    18779    +4     
=======================================
+ Hits        16640    16644    +4     
  Misses       2135     2135           

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[gibsongreen]

Changes to the plugins look good to me and I have this PR bookmarked for the future effort!