HashBrown 0.8.0

• [new feature] Example content startup
• [new feature] Preview pages
• [improvement] MediaController should serve binary files, not redirect to them
• [improvement] Navbar view refactoring
• [improvement] Create user through terminal successful but cant login
• [bug] Connection editor "type" defaults to "(none)"
• [new feature] Add "restart" button to dashboard
• [new feature] ArrayEditor: Min and Max items
• [new feature] StructEditor: Preview templates
• [bug] Array items not saving Schemas correctly
• [task] Site settings schema
• [improvement] Settings need reworking