Use of abstraction to make it more specific and clean

This is a simple patch to test the validity of the previous temporary
fix. See previous commit for details.

WARNING: This is a temporary fix for the labelling of data on bootstrap array on
the front-end. Sall be fixed by further development on the server.

Notably, some tests to check the throwing of errors

Use ngx-dynamic-hooks library to load dynamically the component and make
the latter available through the admin interface of anis