Fixed a small logic error that only exhibited when the web site was i…

…nstalled in a subdirectory.

code/daemon/processors/link_updater.py

@@ -97,7 +97,7 @@ def resolveToAbsolutePath(self, urlstring):
 
         # Resolve paths that are relative to the document root.
         if urlstring.startswith(self.base_path):
-            base_path_exists = os.path.exists(os.path.join(self.document_root, self.base_path))
+            base_path_exists = os.path.exists(os.path.join(self.document_root, self.base_path[1:]))
 
             if not base_path_exists:
                 # Strip the entire base path: this is a logical base path,