Pimp demo site

[georgmaisser]

• [x] Tab Struktur with more than one table on the same page
• [x] One table with pagination (like current table)
• [x] One table with infinite scroll (new table with different data source, like table "courses")
• [x] One lazy loading table (still another table source, like table "course_modules")
• [x] Fix Add item button on demo.php which currently returns "function doesn't exist". Should have same functionality as current delete button.
• [x] Working Action button for checkboxes with modal
• [x] Working Action button for checkboxes without modal
• [x] Working Action button for rows with modal
• [x] Working Action button for rows without modal
• [x] Working Demo of action button with form (row)
• [x] Working action button checkbox (row)
• [x] Fix, if necessary, change rows with multiple tables on the same page.