update contact details and impressum

frontend/templates/base.html.jinja

@@ -50,7 +50,7 @@
         <p>This work has been supported by the eFlows4HPC project, contract #955558. This project has received funding from the European High-Performance Computing Joint Undertaking (JU) under grant agreement No 955558.<br>The JU receives support from the European Union’s Horizon 2020 research and innovation programme and Spain, Germany, France, Italy, Poland, Switzerland, Norway.</p>
         <hr>
         <p>The source code for the Data Catalog is available on <a href="https://github.com/eflows4hpc/datacatalog">github</a>.</p>
-        <p>If there are any technical problems with this site, please contact >PLACEHOLDER<</p>
+        <p>If there are any technical problems with this site, please create an issue on <a href="https://github.com/eflows4hpc/datacatalog/issues">github</a>.</p>
         <hr>
         <p><a href="./impressum.html">Impressum</a></p>
     </div>

frontend/templates/impressum_content.html.jinja

@@ -5,7 +5,7 @@
 <div class="container">
   <div class="row">
     <div class="mt-5 col-sm-12 mb-5">
-        <p>INSERT IMPRESSUM HERE!!</p>
+        <p>See <a href="https://www.fz-juelich.de/portal/EN/Service/LegalNotice/_node.html">here</a>.</p>
     </div>
   </div>
 </div>