Tootips aren't working

[jcoyne]

When you go https://library-hours-dev.stanford.edu/libraries/sal/locations/sal12-circulation all the "n/a" spans are supposed to be tooltips on hover.

https://github.com/sul-dlss/library_hours_rails/blob/main/app/javascript/application.js#L11-L15

It looks like all of these elements are missing the title attribute, which may be a requirement.

It looks like this depends on summary or description, which hasn't been used for a couple of years:

Calendar.where.not(summary: nil).order(dtstart: :desc)
 =>
[#<Calendar:0x00007f7b91320640
  id: 368452,
  dtstart: Sun, 27 Mar 2022 14:00:00.000000000 PDT -07:00,
  dtend: Sun, 27 Mar 2022 20:00:00.000000000 PDT -07:00,
  location_id: 14,
  summary: "Winter-Spring Intersession",
  description: nil,
  closed: nil,
  created_at: Mon, 07 Mar 2022 07:57:36.000000000 PST -08:00,
  updated_at: Mon, 07 Mar 2022 07:57:36.000000000 PST -08:00>,