vcs: implement id for svn commit and EmptyCommit fixes #4136

rhodecode/lib/vcs/backends/base.py

@@ -1332,6 +1332,10 b' class EmptyCommit(BaseCommit):'
     def short_id(self):
         return self.raw_id[:12]
 
+    @LazyProperty
+    def id(self):
+        return self.raw_id
+
     def get_file_commit(self, path):
         return self
 

rhodecode/lib/vcs/backends/svn/commit.py

@@ -203,6 +203,10 b' class SubversionCommit(base.BaseCommit):'
             changed_files.update(files)
         return list(changed_files)
 
+    @LazyProperty
+    def id(self):
+        return self.raw_id
+
     @property
     def added(self):
         return nodes.AddedFileNodesGenerator(