diff --git a/htdocs/includes/jquery/plugins/fileupload/js/jquery.fileupload-ui.js b/htdocs/includes/jquery/plugins/fileupload/js/jquery.fileupload-ui.js
index e330fe16a36..4c36f00865b 100644
--- a/htdocs/includes/jquery/plugins/fileupload/js/jquery.fileupload-ui.js
+++ b/htdocs/includes/jquery/plugins/fileupload/js/jquery.fileupload-ui.js
@@ -1,5 +1,5 @@
 /*
- * jQuery File Upload User Interface Plugin 6.9.1
+ * jQuery File Upload User Interface Plugin 6.9.4
  * https://github.com/blueimp/jQuery-File-Upload
  *
  * Copyright 2010, Sebastian Tschan
@@ -89,7 +89,7 @@
                     files = data.files;
                 $(this).fileupload('process', data).done(function () {
                     that._adjustMaxNumberOfFiles(-files.length);
-                    data.isAdjusted = true;
+                    data.maxNumberOfFilesAdjusted = true;
                     data.files.valid = data.isValidated = that._validate(files);
                     data.context = that._renderUpload(files).data('data', data);
                     options.filesContainer[
@@ -112,8 +112,9 @@
             send: function (e, data) {
                 var that = $(this).data('fileupload');
                 if (!data.isValidated) {
-                    if (!data.isAdjusted) {
+                    if (!data.maxNumberOfFilesAdjusted) {
                         that._adjustMaxNumberOfFiles(-data.files.length);
+                        data.maxNumberOfFilesAdjusted = true;
                     }
                     if (!that._validate(data.files)) {
                         return false;
@@ -151,7 +152,6 @@
                             function () {
                                 var node = $(this);
                                 template = that._renderDownload([file])
-                                    .css('height', node.height())
                                     .replaceAll(node);
                                 that._forceReflow(template);
                                 that._transition(template).done(
@@ -164,6 +164,17 @@
                         );
                     });
                 } else {
+                    if ($.isArray(data.result)) {
+                        $.each(data.result, function (index, file) {
+                            if (data.maxNumberOfFilesAdjusted && file.error) {
+                                that._adjustMaxNumberOfFiles(1);
+                            } else if (!data.maxNumberOfFilesAdjusted &&
+                                    !file.error) {
+                                that._adjustMaxNumberOfFiles(-1);
+                            }
+                        });
+                        data.maxNumberOfFilesAdjusted = true;
+                    }
                     template = that._renderDownload(data.result)
                         .appendTo(that.options.filesContainer);
                     that._forceReflow(template);
@@ -179,7 +190,9 @@
             fail: function (e, data) {
                 var that = $(this).data('fileupload'),
                     template;
-                that._adjustMaxNumberOfFiles(data.files.length);
+                if (data.maxNumberOfFilesAdjusted) {
+                    that._adjustMaxNumberOfFiles(data.files.length);
+                }
                 if (data.context) {
                     data.context.each(function (index) {
                         if (data.errorThrown !== 'abort') {
@@ -210,7 +223,6 @@
                         }
                     });
                 } else if (data.errorThrown !== 'abort') {
-                    that._adjustMaxNumberOfFiles(-data.files.length);
                     data.context = that._renderUpload(data.files)
                         .appendTo(that.options.filesContainer)
                         .data('data', data);
@@ -664,10 +676,32 @@
             }
         },
 
+        _stringToRegExp: function (str) {
+            var parts = str.split('/'),
+                modifiers = parts.pop();
+            parts.shift();
+            return new RegExp(parts.join('/'), modifiers);
+        },
+
+        _initRegExpOptions: function () {
+            var options = this.options;
+            if ($.type(options.acceptFileTypes) === 'string') {
+                options.acceptFileTypes = this._stringToRegExp(
+                    options.acceptFileTypes
+                );
+            }
+            if ($.type(options.previewSourceFileTypes) === 'string') {
+                options.previewSourceFileTypes = this._stringToRegExp(
+                    options.previewSourceFileTypes
+                );
+            }
+        },
+
         _initSpecialOptions: function () {
             parentWidget.prototype._initSpecialOptions.call(this);
             this._initFilesContainer();
             this._initTemplates();
+            this._initRegExpOptions();
         },
 
         _create: function () {
diff --git a/htdocs/includes/jquery/plugins/fileupload/js/jquery.fileupload.js b/htdocs/includes/jquery/plugins/fileupload/js/jquery.fileupload.js
index 05a654bf2e2..4bbd287295a 100644
--- a/htdocs/includes/jquery/plugins/fileupload/js/jquery.fileupload.js
+++ b/htdocs/includes/jquery/plugins/fileupload/js/jquery.fileupload.js
@@ -1,5 +1,5 @@
 /*
- * jQuery File Upload Plugin 5.11.2
+ * jQuery File Upload Plugin 5.13
  * https://github.com/blueimp/jQuery-File-Upload
  *
  * Copyright 2010, Sebastian Tschan
@@ -530,6 +530,10 @@
                         ub + i * mcs,
                         ub + (i + 1) * mcs
                     );
+                    // Expose the chunk index:
+                    o.chunkIndex = i;
+                    // Expose the number of chunks:
+                    o.chunksNumber = n;
                     // Store the current chunk size, as the blob itself
                     // will be dereferenced after data processing:
                     o.chunkSize = o.blob.size;
@@ -776,19 +780,30 @@
             }
         },
 
-        _onChange: function (e) {
-            var that = e.data.fileupload,
-                data = {
-                    files: $.each($.makeArray(e.target.files), that._normalizeFile),
-                    fileInput: $(e.target),
-                    form: $(e.target.form)
-                };
-            if (!data.files.length) {
+        _getFileInputFiles: function (fileInput) {
+            fileInput = $(fileInput);
+            var files = $.each($.makeArray(fileInput.prop('files')), this._normalizeFile),
+                value;
+            if (!files.length) {
+                value = fileInput.prop('value');
+                if (!value) {
+                    return [];
+                }
                 // If the files property is not available, the browser does not
                 // support the File API and we add a pseudo File object with
                 // the input value as name with path information removed:
-                data.files = [{name: e.target.value.replace(/^.*\\/, '')}];
+                files = [{name: value.replace(/^.*\\/, '')}];
             }
+            return files;
+        },
+
+        _onChange: function (e) {
+            var that = e.data.fileupload,
+                data = {
+                    fileInput: $(e.target),
+                    form: $(e.target.form)
+                };
+            data.files = that._getFileInputFiles(data.fileInput);
             if (that.options.replaceFileInput) {
                 that._replaceFileInput(data.fileInput);
             }
@@ -838,7 +853,7 @@
                 return false;
             }
             if (dataTransfer) {
-                dataTransfer.dropEffect = dataTransfer.effectAllowed = 'copy';
+                dataTransfer.dropEffect = 'copy';
             }
             e.preventDefault();
         },
@@ -925,7 +940,11 @@
             if (!data || this.options.disabled) {
                 return;
             }
-            data.files = $.each($.makeArray(data.files), this._normalizeFile);
+            if (data.fileInput && !data.files) {
+                data.files = this._getFileInputFiles(data.fileInput);
+            } else {
+                data.files = $.each($.makeArray(data.files), this._normalizeFile);
+            }
             this._onAdd(null, data);
         },
 
@@ -936,7 +955,11 @@
         // The method returns a Promise object for the file upload call.
         send: function (data) {
             if (data && !this.options.disabled) {
-                data.files = $.each($.makeArray(data.files), this._normalizeFile);
+                if (data.fileInput && !data.files) {
+                    data.files = this._getFileInputFiles(data.fileInput);
+                } else {
+                    data.files = $.each($.makeArray(data.files), this._normalizeFile);
+                }
                 if (data.files.length) {
                     return this._onSend(null, data);
                 }