cubicweb #4564046 indistinguishable links inside tabs [validation pending]

Inside tab views (such as the TabbedPrimaryView, used frequently on this forge), regular text is black without any decoration, links are black without any decoration. It's nearly impossible to tell them apart.

The culprit is jQueryUI's CSS that bluntly sets link colors inside widgets.

done in3.19.6
load left0.000
closed by#16f550b48d57 [web] Override jQueryUI's colors on links (closes #4564046)
patch[web] Slight tweak on jQueryUI's colors on links (related to #4564046) [applied][web] Override jQueryUI's colors on links (closes #4564046) [applied]