#284 Add a copy mind map button

[sorenjohanson]

closes #284

[JannikStreek]

thanks, already looking good 👍

UX:

• Maybe we can add a small info note popup that says "Successfully cloned" ? Otherwise the user might think nothing happened - as the map looks the same. Only thing I could found is the Dialog in material ui.

PR:

• Please Add a "closes #ISSUE_NUMBER_HERE" in the description

Test:

• Maybe add one controller test, only for this method? we can add other controller tests in a separate PR.

[sorenjohanson]

UX:

• Maybe we can add a small info note popup that says "Successfully cloned" ? Otherwise the user might think nothing happened - as the map looks the same. Only thing I could found is the Dialog in material ui.

Do we already have something similar for other use cases? Could integrate ngx-toastr otherwise, but I don't know if that's maybe a bit overkill.

[JannikStreek]

UX:

• Maybe we can add a small info note popup that says "Successfully cloned" ? Otherwise the user might think nothing happened - as the map looks the same. Only thing I could found is the Dialog in material ui.

Do we already have something similar for other use cases? Could integrate ngx-toastr otherwise, but I don't know if that's maybe a bit overkill.

only material dialogs which are also quite heavy for just displaying a simply message. otherwise we could also just code/style or own, not sure if a library is suited just for small alerts.