Changed links to chapters, button to synchronize chapters from courses list, dark mode.

resources/views/course/index.blade.php

@@ -1,6 +1,6 @@
 <x-layout>
     <h1>
-        <a href="/">List</a> &raquo; {{ $course->name }}
+        <a href="/" class="text-decoration-none">List</a> &raquo; {{ $course->name }}
     </h1>
 
     <a href="{{ route('course.sync', ['course' => $course->id]) }}">Sync all chapters offline</a>
@@ -16,7 +16,7 @@
         </thead>
         @foreach($course->chapters()->get() as $chapter)
             <tr>
-                <td><a href="{{ route('course.chapter', ['chapter' => $chapter->id]) }}">{{ $chapter->title }}</a></td>
+                <td><a href="{{ route('course.chapter', ['course' => $course->id, 'chapter' => $chapter->order]) }}" class="text-decoration-none">{{ $chapter->title }}</a></td>
                 <td>{{ $chapter->duration }}</td>
                 <td>{{ $chapter->sync_offline?'Yes':'no' }}</td>
                 <td>{{ $chapter->is_video_file?'Yes':'-' }}</td>