Added the possibility to remove a user's data when deleting a user.

src/css/style.less

@@ -269,6 +269,9 @@ button {
 
     .content {
       .modal-body;
+      .warning {
+        color: red;
+      }
     }
 
     footer {

src/js/yunohost/controllers/users.js

@@ -196,19 +196,43 @@
 
     // Remove existing user
     app.get('#/users/:user/delete', function (c) {
+
+        var params = {};
+
+        // make confirm content
+        var purgeCheckbox = '<input type="checkbox">'+ y18n.t('purge_user_data_checkbox', [c.params['user']]) +'</input>';
+        var purgeAlertMessage = '<div class="warning" style="display: none">⚠ '+ y18n.t('purge_user_data_warning') +'</div>';
+        var confirmModalContent = $('<div>'+ y18n.t('confirm_delete', [c.params['user']]) +'<br><br>'+ purgeCheckbox +'<br>'+ purgeAlertMessage +'</div>');
+
+        // display confirm modal
         c.confirm(
             y18n.t('users'),
-            y18n.t('confirm_delete', [c.params['user']]),
+            confirmModalContent,
             function(){
                 c.api('/users/'+ c.params['user'], function(data) { // http://api.yunohost.org/#!/user/user_delete_delete_4
                     c.redirect('#/users');
-                }, 'DELETE');
+                }, 'DELETE', params);
             },
             function(){
                 store.clear('slide');
                 c.redirect('#/users/'+ c.params['user']);
             }
         );
+
+        // toggle purge warning and parameter
+        confirmModalContent.find("input").click(function(){
+
+          if (confirmModalContent.find("input").is(':checked')) {
+            params.purge = "";
+            confirmModalContent.find(".warning").show();
+          }
+          else {
+            delete params.purge;
+            confirmModalContent.find(".warning").hide();
+          };
+
+        });
+
     });
 
-})();
+})();

src/locales/en.json

@@ -412,5 +412,7 @@
     "name" : "Name",
     "install_community_appslists_info" : "Community applications list allows you to install community maintained applications.<br />See the full list on <a href='https://yunohost.org/apps'>yunohost.org/apps</a>.",
     "install_community_appslists_warning" : "Note that these applications packages are <strong>not</strong> official and not maintained by the YunoHost team.<br />Installing these applications is at your own risk and could break your system.",
-    "install_custom_app_appslists_info" : "Note that you can use alternative applications lists to install some other apps maintained by the YunoHost community."
+    "install_custom_app_appslists_info" : "Note that you can use alternative applications lists to install some other apps maintained by the YunoHost community.",
+    "purge_user_data_checkbox" : "Purge %s's data? (This will remove the content of it's home and mail directories.)",
+    "purge_user_data_warning" : "Purging user's data is not reversible. Be sure you know what you're doing!"
 }