Add initial implementation of Simple Gantt chart and sample names list

- Created index.html for the Gantt chart with sample tasks and configurations.
- Added styles for the Gantt chart and linked necessary CSS and JS files.
- Introduced a names.txt file containing a list of names for potential use in the application.

templates/projects/task-edit.php

@@ -29,11 +29,11 @@ ob_start();
 <?=
 \Html::input(
   [
-      'label'        => 'Data rozpoczęcia',
-      'name'         => 'date_start',
-      'id'           => 'date_start',
-      'value'        => $this -> task[ 'date_start' ],
-      'class'        => 'datetime',
+      'label' => 'Data rozpoczęcia',
+      'name' => 'date_start',
+      'id' => 'date_start',
+      'value' => $this -> task[ 'date_start' ],
+      'class' => 'datetime',
       'inline'       => true,
       'autocomplete' => 'off'
   ]