Following discussion with Aurélien, it breaks because of unicode changes
in Zope2.12 and are not being used.

Fix skin priority so it can be used in projects. Set it to 10.0 in a similar way as other "style" ones like ODT / ODS.

Otherwise they can not lookup(traverse) the utility.

Try to be more defensive and run only if in proper page (otherwise it breaks some UI jQuery functions).

The previous test is based on the wrong usage of asContext at ConstraintMixin.applyOnAccessorHolder.
It was fixed at 7634c000.

because it was wrongly removed at c7f1a35c
when replacing to specify the portal type with the rule reference.

Because they are testing newly added functions on new-simulation.

Don't even search for future trade phases.

Rules should now contain all predicates necessary for matching the right
simulation movements. Which they now can do since they all have "Predicate"
tabs now.

(partially revert 5c2c470f)

Use getTypeBasedMethod and unify handlers.

See Coding Crime Guideline.  http://www.erp5.org/GuidelinesForCodingCrimes
(thx nicolas)

The 'test' function seems to disappear in a few contexts. This should be fixed in Chameleon, but we work around it here for now