Continued with database work for permissions overhaul

Added to the entity_permissions table with further required fields and indexes.
Wrote the code for checking permissions.

resources/views/settings/roles/form.blade.php

@@ -33,6 +33,7 @@
                     <tr>
                         <th></th>
                         <th>Create</th>
+                        <th>View</th>
                         <th>Edit</th>
                         <th>Delete</th>
                     </tr>