And to allow proper reaction by the annotation windows, inform them when
a LOK callback is registered.

With this, it's possible to modify the contents of annotations via LOK.

(cherry picked from commit 1ba9d7fd)

Conflicts:
	sw/inc/PostItMgr.hxx
	sw/inc/SidebarWin.hxx
	sw/source/core/view/viewsh.cxx
	sw/source/uibase/docvw/SidebarTxtControl.hxx
	sw/source/uibase/docvw/edtwin.cxx

Change-Id: I4489941512197880940e20cbaeb0b47a7a6f26fc