Add redirect for Exception Safety page

Author: GregKaleka

kube/boost/templates/configmap-nginx.yaml

@@ -129,6 +129,7 @@ data:
       location = /development/header.html { return 301 /doc/contributor-guide/design-guide/headers.html; }
       location = /development/separate_compilation.html { return 301 /doc/contributor-guide/design-guide/separate-compilation.html; }
       location = /development/library_metadata.html { return 301 /doc/contributor-guide/requirements/library-metadata.html; }
+      location = /more/generic_exception_safety.html { return 301 /doc/user-guide/exception-safety.html; }
       location = /doc/ { return 301 /libraries/; }
       location = /libs/ { return 301 /libraries/; }
       location = /doc/libs/ { return 301 /libraries/; }