add non-redundant titles to page buttons

packages/react-bootstrap-table2-paginator/src/page-button.js

@@ -30,7 +30,7 @@ class PageButton extends Component {
     }, className);
 
     return (
-      <li className={ classes } title={ title }>
+      <li className={ classes } title={`page-${title}`}>
         <a href="#" onClick={ this.handleClick } className="page-link">{ page }</a>
       </li>
     );

packages/react-bootstrap-table2-paginator/test/page-button.test.js

@@ -105,7 +105,7 @@ describe('PageButton', () => {
     const title = 'aTitle';
     beforeEach(() => {
       wrapper = shallow(
-        <PageButton { ...props } active disabled={ false } title={ title } />
+        <PageButton {...props} active disabled={false} title={`page-${ title }`} />
       );
     });