Docs: Add user sections

docs/user/index.md

@@ -18,23 +18,35 @@ The dashboard is a simple browser application, allowing hosts to upload and mana
 
 `/* tbd */`
 
-### Language
+### Logout
 
 `/* tbd */`
 
-### Navigation
+### Navigation Bar
 
 `/* tbd */`
 
-### Show Manager
+### User Profile
 
 `/* tbd */`
 
-### File and Playlist Management
+### User Settings
 
 `/* tbd */`
 
-### Calendar
+### Switch Language
+
+`/* tbd */`
+
+### Show Management
+
+`/* tbd */`
+
+### File & Playlist Management
+
+`/* tbd */`
+
+### Calendar & Schedule Management
 
 `/* tbd */`