connect to KOBO api

[bariela]

** Functional requirements**
Connect to KOBO api, fetch results for specified survey and store them in app.

Technical requirements

• Create new collection in database for data with single point coordinates.
• Create function for fetching data from KOBO api and storing them in database.
• Create new route to fetch this kind of data
• Define new mapLayer and modify displaying for this new kind of data

Dependencies
none

Definition of done
KOBO data are fetched in regular intervals from API, stored in database and displayed in map view.