Editors: Move id() from editor to document.

Change-Id: Ib81076842ab1c16832224790194b001206404d64
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/autotoolsprojectmanager/autotoolsprojectfile.cpp

@@ -40,6 +40,7 @@ AutotoolsProjectFile::AutotoolsProjectFile(AutotoolsProject *project, const QStr
     Core::IDocument(project),
     m_project(project)
 {
+    setId("Autotools.ProjectFile");
     setFilePath(fileName);
 }