Comment 2 for bug 1746365

Good catch Kathy, Bootstrap do mention in their docs under accessibility that a lot of their default colors will lead to insufficient contrast as far as WCAG. (https://github.com/twbs/bootstrap/blob/v4-dev/docs/4.0/getting-started/accessibility.md)

Anyhow, looks fine to me so here's a signoff branch:

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/cesardv/kmlussier_lp1746365-change-default-staff-link-color