Aa-fleetpings

Added

- Error message on missing information for Optimer and SRP
- Optimer (Mandatory fields):
- » FC Name
- » Fleet Name
- » Formup Location
- » Formup Time
- » Ships / Doctrine
- SRP (Mandatory fields):
- » Fleet Name
- » Ships / Doctrine

Fixed

- [Compatibility] AA 3.x / Django 4 :: ImportError: cannot import name
'ugettext_lazy' from 'django.utils.translation'

Changed

- JavaScript modernised

Changed

- Using `path` in URL config instead of soon-to-be removed `url`

Added

- `(Upcoming)` to the header text of pre-pinged fleets to ensure there is no
confusion between pre-pinged fleets and fleets that start now ([61])

Changed

- JS rewrite

Added

- Versioned static files to prevent browser cache related errors on app updates

Fixed

- An issue where the checkboxes haven't been cleared properly when switching between
"Pre-Ping" and "Formup NOW"

> that is introduced in Alliance Auth 2.8.0, so have your Auth updated before
> installing this version.

Added

- Filter to the admin backend
- More checks for Discord. Now check if the Discord Service s actually activated
and setup properly
- Compatibility to AA Timezones (v1.2.1) new link style
- Backwards compatibility to versions of AA Timezones before 1.2.1, so the old link
style is still generated when using an older version

Fixed

- MySQL text fields can't have default values
- Parameters differ from overridden method warning

Changed

- Use clipboard.js bundled with Alliance Auth
- Minimum required Alliance Auth version set to 2.8.0 due to us using `clipboard.js`
bundled with Alliance Auth
- Unused lib removed

Changed

- Minimum requirements
- Python 3.7
- Alliance Auth v2.9.3