(bug 45673) Removing "add" placeholder DOM from claimlistview

The DOM for the "add" toolbar used to add a claim to an existing section is created out
of the claimlistview via the toolbar controller / addtoolbar widget now.

Change-Id: I64fd820cf8772913a8112500d26855753eef5607
Removing toolbar node from wb-claim template

Change-Id: I23dc50e04abc1afb9e1f66890c2a65706634e392
Merge "(bug 45673) Removing "add" placeholder DOM from claimlistview"
Merge "Removing toolbar node from wb-claim template"