Description of problem: setting the ID of an important admonition does not cause an anchor to be generated for that element, even if it is referenced via an xref. The xref does generate an href anchor that, however, is missing from the target. 

This is probably similar to bug 595564.


Version-Release number of selected component (if applicable):

version=2.1

How reproducible:

Steps to Reproduce:
1. xref to the ID of an important admonition
2. publican build (html-single in this case)
3. open document, click on link to admonition, no jump
  
Actual results:

nothing

Expected results:

jump to link

Additional info:

Generated link HTML is:

<a class="xref" href="#important-Smart_package_group_removal" title="Smart package group removal">Smart package group removal</a>

Generated target HTML is:

<h2>Smart package group removal</h2><a id="id4869860" class="indexterm"></a><a id="id4869872" class="indexterm"></a>