If a style value that ends in ; is used (i.e. color: #FF0000;) then the parser send's setStyle('colour', '#FF0000') and setStyle('', '').

The second call with a key that is empty, triggers an error in IE8 (and possibly below) when the code hits the @node.style[key] = value code below.
As I assume we should ignore blank keys, I just return false immediately.

Very difficult to test, as it works fine on all modern browsers.

Using storage key if we find it for the location for the urls when using a nested URL.

The problem was identified when using a nested hasOne. The urlNestsUnder method overwrites the url methods for the model, which in turns take priority over the _defaultCollectionUrl method inside the urlForCollection method.
The url method that is re-writted uses a plural resource name, and thus ignores the storageKey set, which (in my understanding) is what should be used.

Added backward compatibility for when storageKey doesn't exist, the legacy pluralisation is utilised.
Merge pull request #945 from ToMoCoop/master

Fix for nested models with RestStorage to use storagekey where possible, and a small fix for IE8