Added bookshelves homepage options

- Updated homepage selection UI to be more scalable
- Cleaned homepage selection logic in code
- Added seed test data for bookshelves
- Added bookshelves to permission system

resources/views/common/home.blade.php

@@ -10,7 +10,7 @@
 
 @section('body')
 
-    <div class="container">
+    <div class="container" id="home-default">
         <div class="row">
 
             <div class="col-sm-4">