Make Jest test pass
Make Jest test pass

Implement file table footer so that Jest tests pass, and calculate header and footer colspan more accurately.

hms-dbmi/fourfront,ENCODE-DCC/encoded,hms-dbmi/fourfront,hms-dbmi/fourfront,ENCODE-DCC/snovault,hms-dbmi/fourfront,ENCODE-DCC/encoded,hms-dbmi/fourfront,4dn-dcic/fourfront,4dn-dcic/fourfront,ENCODE-DCC/snovault,4dn-dcic/fourfront,4dn-dcic/fourfront,ENCODE-DCC/encoded,T2DREAM/t2dream-portal,ENCODE-DCC/snovault,ENCODE-DCC/snovault,ENCODE-DCC/encoded,ENCODE-DCC/snovault,T2DREAM/t2dream-portal,T2DREAM/t2dream-portal,T2DREAM/t2dream-portal