Don't add to the firebaseUrl
Don't add to the firebaseUrl

This is a shared string and is mutated if changed.

We are adding a trailing slash for each new instatiation
of a CrudService object, but this is ok.

Use a different variable to append the prefix to.

empirical-org/Quill-Grammar,empirical-org/Quill-Grammar,ddmck/Quill-Grammar,ddmck/Quill-Grammar,ddmck/Quill-Grammar,empirical-org/Quill-Grammar