webui: link to api docs from user settings page

Author: justinclift

webui/templates/preferences.html

@@ -41,7 +41,8 @@ <h3 style="text-align: center;">Display options</h3>
                 </table>
             </form>
 
-            <h3 style="text-align: center;">API keys</h3>
+            <h3 style="text-align: center;"><a href="https://api.dbhub.io" target="_blank">API keys</a></h3>
+            <div style="text-align: center; font-style: italic; font-size: large;">(In early development, but you're welcome to use it.)</div>
             <table class="table table-striped table-responsive settingsTable" style="margin-bottom: 20px;">
                 <tr>
                     <th>Key</th>