Allowed wider popovers in grapth. (#2903)
Allowed wider popovers in grapth. (#2903)

Changing in luigi.css and not bootstrap to allow for bootstrap upgrades.

Testes and looks fine in Chrome, Firefox and Edge.
spotify/luigi,spotify/luigi,dlstadther/luigi,jamesmcm/luigi,spotify/luigi,jamesmcm/luigi,dlstadther/luigi,PeteW/luigi,spotify/luigi,riga/luigi,PeteW/luigi,riga/luigi,jamesmcm/luigi,jamesmcm/luigi,riga/luigi,dlstadther/luigi,dlstadther/luigi,riga/luigi,PeteW/luigi,PeteW/luigi