align validation of repository name and namespace

scm-ui/src/repos/components/form/repositoryValidation.js

@@ -1,8 +1,10 @@
 // @flow
 import { validation } from "@scm-manager/ui-components";
 
+const nameRegex = /(?!^\.\.$)(?!^\.$)(?!.*[\\\[\]])^[A-z0-9\.][A-z0-9\.\-_]*$/;
+
 export const isNameValid = (name: string) => {
-  return validation.isNameValid(name);
+  return nameRegex.test(name);
 };
 
 export function isContactValid(mail: string) {