add eggnog card and improve gene details page

backend/metagenedb/apps/catalog/serializers/function.py

frontend/src/components/eggnogcard/eggnogcard.html

frontend/src/components/eggnogcard/eggnogcard.js

frontend/src/components/keggcard/keggcard.html

frontend/src/components/keggcard/keggcard.js

...end/src/components/listing/simpleexpand/simpleexpand.html

frontend/src/components/listing/simpleexpand/simpleexpand.js

...tend/src/components/listing/simpleexpand/simpleexpand.vue

...d/src/components/listing/simplelisting/simplelisting.html

...end/src/components/listing/simplelisting/simplelisting.js

...nd/src/components/listing/simplelisting/simplelisting.vue

frontend/src/components/taxonomycard/taxonomycard.html

frontend/src/views/genedetail/genedetail.html

frontend/src/views/genedetail/genedetail.js

frontend/src/views/genes/genes.html