Removes mention of isMandatory in list of d2wKeys.

This component does not honour the isMandatory key, as discussed on
the mailing list in 2010, 2013.

http://permalink.gmane.org/gmane.comp.web.webobjects.wonder-disc/15336
change back entityHierarchyForEntity
that method was moved from ERXUtilities
some browsers don't make the file input high enough
check the right variable
check for edge case

return value of that method is used as index of a char array so check for edge case where Math.abs(Long.MIN_VALUE) == Long.MIN_VALUE which is negative
don't recreate those objects over and over
AjaxHoverable extra CSS hook

Added another hook for writing CSS rules. The outermost div gets another class "showHoverable" when the hoverable is active.

Signed-off-by: Aaron Rosenzweig <aaron@chatnbike.com>
Merge pull request #468 from recurve/AjaxHoverable_CSS_Hook

Ajax hoverable css hook. With examples even!
javadoc fix.
Add a matchingValues() method to ERXQ that takes a variable-length list of things to use for qualifiers, and tests thereof.
Some other testy goodness.
method name spelling fix
Merge pull request #424 from paulhoadley/d2w-javadoc-fix

Pulls 'isMandatory' key (which is no longer honoured) from the Javadocs.
Merge branch 'wocommunity_integration' into integration