addActionOnObjectId method probably useless on LeftForLink and RightForLink

[openlowcode]

The LeftForLink property (org.openlowcode.design.data.properties.basic) has a method addActionOnObjectId that probably does not make sense as it refers the left object of the link.

There is no reason to add such an action on the left for link widget, as it should be directly on the main object on the object page.

This ticket should confirm that this method is not used, and then cut it.

[openlowcode]

Similar problem exists on the RightForLink property