Section title editor appears over section help icon

[ebruchez]

• http://localhost:8080/orbeon/fr/orbeon/builder/new
• set section help
• hover over section title
• see screenshot

[avernet]

Fixed by adding overflow: hidden on the .fr-section-label a, that contains the label:

• the markup is generated by a minimal xf:trigger
• the help is done with an image (sized span with a background image), sibling of the a
  • CSS floats the help icon left
  • the a box goes under the help
  • the click interceptor is sized/positioned relative to the a box, and hence goes over the help icon
  • the overflow: hidden prevents the a from going under the float, as the overflow: hidden establishes new block formatting context (BFC)