Fix the SSO buttons on the signup page (#1754)
Fix the SSO buttons on the signup page (#1754)

Update it to match the sign in page.
quiltdata/quilt-compiler,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt-compiler,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt-compiler,quiltdata/quilt-compiler