Fix unicode error when non-ASCII characters are typed into the name field of a comment by anonymous users.
We are indexing the member.id only now instead of the full member name or what anonymous users typed into the name field.
svn path=/plone.app.discussion/trunk/; revision=34932
New feature: As a moderator, I am notified when new comments require my attention;
New feature: As a commenter, I can enable/disable email notification of additional comments on this object;
Make p.a.d. work with the recent version of plone.z3cform (0.5.10);
svn path=/plone.app.discussion/trunk/; revision=34602