link dev doc in footer

Author: N. Justus

ui/src/partials/footer.tsx

@@ -23,21 +23,22 @@ export class Footer extends React.Component<any, State> {
   render() {
     return (
       <footer className="footer">
-        <Container>
-          <Row>
+        <Container fluid>
+          <Row className="justify-content-xs-center">
             <Col xs="5">
               {this.state.infos && (
                 <small>{this.state.infos.copyright}. Distributed under the <a target="_blank" href={this.state.infos.licenseUri}>{this.state.infos.license}</a>.</small>
               )}
             </Col>
-            <Col xs="2">
+            <Col xs="auto">
               {this.state.infos && (
                 <small>V: {this.state.infos.version} Rev: <a target="_blank" href={`https://github.com/THM-MoTE/webmodelica/commit/${this.state.infos.commitHash}`}>#{this.state.infos.commitHash}</a></small>)}
             </Col>
-            <Col xs="5">
+            <Col xs="auto">
               <small>
                 <a target="_blank" href="https://github.com/thm-mote/webmodelica"><Octicon name="mark-github" />&nbsp;Repository</a>&nbsp;&nbsp;
-                <a target="_blank" href="https://github.com/thm-mote/webmodelica/issues"><Octicon name="issue-opened" />&nbsp; Issues</a><br />
+                <a target="_blank" href="https://github.com/thm-mote/webmodelica/issues"><Octicon name="issue-opened" />&nbsp; Issues</a>&nbsp;&nbsp;
+                <a target="_blank" href="documentation.html"><Octicon name="book" />&nbsp; Doc</a>
               </small>
             </Col>
           </Row>