Simple Posts with Comments and Rating System

• Add post;
• Add comment to post;
• Add post's rating from 1 to 5 stars (one browser is able to rate one post at one time, after reopen the tab/window user is able to rate post again);
• Display comments under the correspondent post;
• All posts counter;
• Positive posts counter (rating 4-5 stars considers positive);
• Negative posts counter (rating 1-2 stars considers negative);
• Page works via AJAX without reloading: after a visitor adds a new post or comment it rerenderes on the page and the counter recalculates (via AJAX).