Review languages and locales; fix start/end dates and timings formats

view-webapp/src/main/webapp/WEB-INF/layouts/standard.html

@@ -70,6 +70,7 @@
   <link rel="stylesheet" href="/css/main.css"/>
   <script type="text/javascript">
     const lang = '${request.lang}';
+    const locale = '${request.locale}';
     // #[[
     onLoad(() => {
       $('#lang').on('click', e => {

view-webapp/src/main/webapp/WEB-INF/tools.xml

@@ -3,11 +3,11 @@
 
     <toolbox scope="application">
         <tool key="translate" class="org.jeudego.pairgoth.view.TranslationTool"/>
+        <tool key="strings" class="org.apache.commons.lang3.StringUtils"/>
         <!--
         <tool key="number" format="#0.00"/>
         <tool key="date" locale="fr_FR" format="yyyy-MM-dd"/>
         <tool key="inflector" class="org.atteo.evo.inflector.English"/>
-        <tool key="strings" class="org.apache.commons.lang3.StringUtils"/>
         -->
     </toolbox>