[web] Slight tweak on jQueryUI's colors on links (related to #4564046)
Follow up to commit 16f550b48d57 which was somewhat brutal. This change
only overrides jQueryUI's CSS rules inside tab panes and leaves actual
tab buttons alone.
usr/lib/PY_VERSION/*-packages/cubicweb/entities/
usr/lib/PY_VERSION/*-packages/cubicweb/ext/
usr/share/cubicweb/cubes/
usr/lib/PY_VERSION/*-packages/cubicweb/*.py