Aa-fleetpings

Fixed

- Missing "Fleet" on embedded pings headline when no fleet type is selected
- Hopefully escaped possible single quotes in a character name, so they will not be
transformed into their respective HTML entities in a ping

Changed

- JS modularizing, creation of the link for aa-timezones moved to its own function
- Added a bit more information to the embedded ping, so on mobile phones or system
notification there is a bit more than just `everyone` or `here` to see.

Added

- Configuration for pre-defined fleet comms, formup locations, and doctrines. These
can be configured in your `local.py` via `AA_DISCORDFORMATTER_FLEET_COMMS`,
`AA_DISCORDFORMATTER_FLEET_DOCTRINES` and
`AA_DISCORDFORMATTER_FLEET_FORMUP_LOCATIONS`.

Added

- Restriction for ping targets. Just to make sure not everyone can ping for Capitals
or even Supers and Titans if these are configured ping targets. ([18])

Changed

- Set time selection steps to 15 minutes instead of 60 in the datepicker
- Set Monday as the beginning of the week in the datepicker

Fixed

- Our Australian time travelers and everyone else who lives in the future (UTC+x) are
now able to pre-ping fleets that are coming up in 2-hours Eve time, which might
still be in their past local time, depending on how far in the future they live. ([19])

Added

- Option to embed automatic pings via webhook ([13])
- Embedded pings via webhook are now color coded. Pre-defined fleet types are by
default (Roam = green, Home Defense = yellow, StratOP = orange, CTA = red), and custom
fleet types can be defined via settings.

Fixed

- Missing semicolons in JavaScript found their way back to where they belong

Changed

- Link to time zones conversion is now a named link

Added

- Ping creator at the end auf automatic pings via webhooks