use css to hide overlong labels in tree, after suggestion from @ivan1986

Author: dbu

Resources/public/css/style.css

@@ -1,6 +1,12 @@
-#tree_dialog {
-    width: 100%;
-    height: 100%;
-    margin: 0;
-    padding: 0;
-}
+.jstree a {
+    width: 95%;
+    width: calc(100% - 20px);
+    overflow-x: hidden;
+    text-overflow: ellipsis;
+    margin-bottom: -5px;
+}
+
+.jstree a:hover {
+    width: auto;
+    overflow-x: visible;
+}

Resources/views/Base/tree.html.twig

@@ -6,3 +6,5 @@
 
 <script src="{{ asset('bundles/cmftreebrowser/js/admin_tree.js') }}" type="text/javascript"></script>
 <script src="{{ asset('bundles/cmftreebrowser/js/select_tree.js') }}" type="text/javascript"></script>
+
+<link rel="stylesheet" href="{{ asset('bundles/cmftreebrowser/css/style.css') }}" type="text/css" media="all"/>