Fix upload button on simulation landing page
Fix upload button on simulation landing page

Make the upload button on the simulation landing page consistent with
the color of the ribbon and front page upload button.

wd15/chimad-phase-field,usnistgov/chimad-phase-field,wd15/chimad-phase-field,usnistgov/chimad-phase-field,wd15/chimad-phase-field,usnistgov/chimad-phase-field