Mobile: Manually cancel (stop observation) vs. pause observation

[markus-ebner]

It's unclear what the difference between cancel observation (with stop icon) on top and the button to pause observation at the bottom is.

⏹ Cancel --> This will remove the observation completely.
Pause observation --> This will only stop it for now, can be restarted again by the user.

Both actions should be located closely together
The "Cancel" should have a modal, if the user is sure and give the user a warning, that it is completely removed.

Todo:

• Rename "⏹ Cancel" to "Stop oberservation|Aufzeichnung stoppen"
• Reorder it underneath the "Pause observation" button
• Add Modal with text "Are you sure, that you want to remove this specific observation completely?" with the buttons "Cancel" und "Stop observation".
• The styling of the stop observation button should be the same as it was before, so there is a difference between these two buttons.