Product URL  now forced to parents if variation
More Dutch Language
Merge pull request #349 from jaapjolman/1.2/develop

More Dutch Language
Added attributes to products plugin
Fixed syntax errors in example category tree
Updated cart insertion logic for URLs
Merge pull request #352 from superrbstudio/1.2/develop

Fixed syntax errors in example category tree
Order by attributes were not handled as per the documentation. Allows ordering of categories by a specific field via the plugin
Revert to tree sorting when an order attribute is not available
Removed redundant variables
Updated to reuse existing components
Forgot to handle order-by and order-dir if they are used
Merge pull request #354 from superrbstudio/1.2/develop

Categories plugin ordering
Fixed parse_params plugin issue
Small category cleanup
Categories JS fix
Added formatted subtotal to cart plugin
Added rowid to cart plugin
Detect whether the modifers type is actually an array before trying to determine the value of one of it's elements
Merge remote-tracking branch 'upstream/1.2/develop' into 1.2/develop