cubicweb-openidrelay #1373564 nicer look [validation pending]

  1. the current icon doesn't look good
  2. should appear on the right of the [authenticate] link
prioritynormal
typeenhancement
done in0.3.0
load0.200
load left0.000
closed by#9bae0c87f335 [views] use a svg icon (closes #1373564)
patch[views] use a svg icon (closes #1373564) [applied]