Implement date/date ranges using standard calendar dates

[djplaner]

Using shoelaces input types implement a way to specify a date/date range for a module using a generic calendar. No abstract institutional calendars.

• [x] #259

[djplaner]

Design

• [x] REmove the abstract date entry
• [ ] Replace aeon time picker with shoelace datetime-local
• [x] Add in use of shoelace input element for date and generate same output as abstract date elements
• [x] Modify the card representation to work with just a date - Maybe already does

Sub-tasks

• [x] Need to save the full date and possibly have a migration path - just add current year - or year for course??
• [x] Improve layout of general date
• [x] add in/modify tooltips
• [x] handle conversion from existing versions - dates i.e. set date from existing dates
• [x] Update documentation
• [x] Change dates

Finalise

Minor tasks

• [x] switch the show/hide for date components - click to show
• [x] Remove the current term/date
• [x] Add in a in context representation of the date
• [x] handle date clear - including hiding show for empty to date
• [x] add "label" dateShow
• [x] Clear date for stop date, clears dual date
• [x] When date's are cleared, ensure the time show is turned off

Next steps

• [x] Identify and remedy problem with hiding dates - after stop date cleared (clearing is the problem??)
• [ ] Add a "move collections dates" facility
• [ ] Figure out singelton approach to handling term specific dates

[djplaner]

Restart

Current implementation

• Has Calendar date and time separate remove time
• Need to separate out choosing date/time and displaying which components are being displayed
  • Weeks should be greyed out - or perhaps a manual setting
  • time / month / date / day - pre-populate those and also hide them

[djplaner]

Problem with reactivity of show "start date" components

Show works for start date initially, but if the stop date is cleared, it stops working. Set the stop date again and the show components work again.

What happens when the stop date is cleared?

updateModuleDate is triggered when calendarDate is changed. If value is "" it then resets all the components of the start/stop date.

What happens when show component clicked

In theory, a configStore value is changed and that reactively triggers DateWidget

• Does the change in component get picked up in date widget
• Is date widget logic not working

It appears to be the switch to single date - single date is wrong?? -- yep. Fixed.