updates

See merge request !10

updates

See merge request !9

allow edit in popup

See merge request !8

combined

See merge request !7

and many bugfixes.

filters

See merge request !6

Onbaording

See merge request !5

beleg formular and list of all items

See merge request !2

fetching data from other file now working but lost loading screen, has to be investigated, error lies in loading variables

it stores the api token in localstorage.
the backend is responsible for providing the porper env variables.
also formated everything with prettier.

external functions work in principle but merge seems to have a problem when all three main fetches are called from the external file (when only two, it works) merge and filter has to be changed