Merge pull request #251 from CESNET/welcome-fix

specify that users cannot run interactive tours from GCZ login page

Author: martenson

templates/usegalaxy.cz/static/welcome.html

@@ -46,8 +46,7 @@
                 questions, please contact us at
                 <a href="mailto:galaxy@cesnet.cz" target="_blank">galaxy@cesnet.cz</a>.
             </p>
-            <p>Have a look at one of our <a target="_blank" href="https://training.galaxyproject.org/">trainings</a> or
-                you can start with an interactive tour:
+            <p>Have a look at one of our <a target="_blank" href="https://training.galaxyproject.org/">trainings</a> or -- if you are logged in -- you can start with an interactive tour:
             <div>
                 <a target="_parent" href="../tours/core.galaxy_ui" class="btn btn-secondary btn-sm">Galaxy UI</a>
                 <a target="_parent" href="../tours/core.history" class="btn btn-secondary btn-sm">Galaxy History</a>