derekovecs: replace former footer with about tab including references
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+<html>
+<p>
+ DeReKoVecs (Fankhauser & Kupietz 2017, 2019; Kupietz et al. 2018) is the new open lab of the Corpus Linguistics group at IDS Mannheim. Similar to the
+ Collocation Database <a href="http://corpora.ids-mannheim.de/">CCDB</a> (Keibel & Belica 2007, Belica 2011), DeReKoVecs serves for investigating and comparing
+ of measurements, dimension reduction procedures, visualizations etc., to track down detailed paradigmatic and syntagmatic relations
+ between words based on their use in very large corpora such as the German Reference Corpus DeReKo.
+</p>
+<p>
+ The models used here are based on an extension of word2vec (Mikolov et al. 2013), wang2vec (Ling et al. 2015)
+ and on the other hand on simple co-occurence counts and analysis methods that operate on these.
+</p>
+<h3>Disclaimer</h3>
+<p>
+ Please note that – unlike e.g. <a href="https://comsmas2.ids-mannheim.de/">COSMAS II</a> – we cannot operate DeReKoVecs
+ as a service with high reliability. DeReKoVecs is only intended as a glass laboratory.
+ Things can change unannounced at any time and even a complete breakdown over a longer period of time cannot be excluded with certainty.
+ If you would like to use DeReKoVecs for your own research in the longer term, please contact us.
+</p>
+</html>
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+<a href="#tabs-4" onclick='$( "#tabs" ).tabs( "option", "active", 3 );' title="">About DeReKoVecs</a>
+| <a href="https://www1.ids-mannheim.de/kl/projekte/methoden.html" title="">Contact</a>
+| <a href="https://www1.ids-mannheim.de/allgemein/datenschutz.html" title="">Privacy</a>
+| <a href="https://www1.ids-mannheim.de/allgemein/impressum.html" title="">Impressum</a>
+| © <a target="_blank" href="https://www.ids-mannheim.de/">Leibniz Institute for the German Language</a>)