Merge pull request #12 from EBI-Metagenomics/feature/cazy-annotations

CAZyme annotations on MAGs

sets window size for chromedriver

Hierarchical Samples (#4)

* [wip] adding animal and sample hierarchical biosample structure

* [wip] deleting "projects" to make biosamples the source of truth

* [wip] hierarchical samples and sample types

* tidying up sample types

* adds Animals to global search

* adds sample types rendering and filtering to Animals API endpoint

* updates API tests for hierarchical samples; API fixes

* updates website tests

* updates docs (TODO: tutorial)