…er. (Fixes #151) (#152)

* 📜 improving copy

* 💚 improve spacing in home view

* 💚 improve footer bottom position without scroll bars

* 🔨 handle empty schedules list

* 🔨 only json load google token if it exists

* 🔨 fix sync button styles

* Warn the user about the consequences of disconnecting a calendar.

* ➕ update locales

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Co-authored-by: Andreas Müller <mail@devmount.de>

* ➕ use slots for availability attendees

* ➕ extend booking flow for availabilities (wip)

* 📜 update er documentation

* ➕ implement request confirmation mail

* ➕ add booking confirmation view

* ➕ create loading spinner component

* ➕ availability request handling

* ➕ add external link to my link settings

* ➕ add booking status

* ❌ remove console statement

* 📜 update documentation

* 🔨 make date format constant

* ❌ remove unused code

* ➕ add check for previously booked slot

* ❌ rmove cr, keep lf

* ❌ remove cr, keep lf