Add a horizontal line beneath headers in the page context to make clear that even *very small* h4/h5 headers are actually headers!
Add a horizontal line beneath headers in the page context to make clear that even *very small* h4/h5 headers are actually headers!

phac-nml/irida,phac-nml/irida,phac-nml/irida,phac-nml/irida,phac-nml/irida,phac-nml/irida,phac-nml/irida,phac-nml/irida