fix: time standardization in two formats only

[maze-runnar]

Fixes #5490
Make event format as in this example: 4 Dec, 2020 5:00 PM (IST)

• table https://eventyay.com/events
• table https://eventyay.com/admin/events
• table https://eventyay.com/admin/sales
• table https://eventyay.com//admin/users/
• table event orders table /events/[event ID]/tickets/orders
• table event attebdees /events/[event ID]/tickets/attebdees
• table session overview page events/[event ID]/sessions/all
  This is good for most public pages
• Make event format as in this example: Friday, 4 December, 2020 5:00 PM (IST)
• tickets overview https://eventyay.com/my-tickets/past
• ticket order https://eventyay.com/orders/[order number here]
• events dashboard /events/[events ID]
• public events page header e/[eventpage], e.g. https://eventyay.com/e/a315169f
• public events page ticket section, e.g. https://eventyay.com/e/a315169f#tickets

call for speakers, e.g. https://eventyay.com/e/a315169f/cfs

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

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[codecov]

Codecov Report

Merging #5747 (d9fbc88) into development (4006f52) will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development    #5747   +/-   ##
============================================
  Coverage        23.50%   23.50%           
============================================
  Files              512      512           
  Lines             5459     5459           
  Branches            62       62           
============================================
  Hits              1283     1283           
  Misses            4160     4160           
  Partials            16       16           

Impacted Files	Coverage Δ
app/controllers/account/billing/invoices/list.js	100.00% <ø> (ø)
app/controllers/admin/sales/invoices.js	0.00% <ø> (ø)
app/controllers/admin/sessions/list.js	0.00% <ø> (ø)
app/controllers/admin/users/list.js	0.00% <ø> (ø)
app/controllers/events/list.js	23.07% <ø> (ø)
app/controllers/events/view/sessions/list.js	0.00% <ø> (ø)
app/controllers/events/view/tickets/orders/list.js	0.00% <ø> (ø)

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[mariobehling]

Please also change using long version on:

• frontpage event tiles
• event pages above calendar icon

[mariobehling]

Looks like you are changing the time format to 24 hours and show e.g. 13:00 PM. Please use standard time format and we need to take care that this is different in different languages.
Compare: https://open-event-frontend-git-time-standard-format.eventyay.vercel.app/e/3dbaaa50
See PR here as well #5748

[iamareebjamal]

Yes, there are far fewer changes in this PR than the previous one. Please keep all changes from the previous PR and fix the wrong things

[divyamtayal]

why changed to general

[iamareebjamal]

We want to move to a single helper, general-date

[divyamtayal]

Pls also correct this declaration, here I think we need to define dateFormat inside options as an object