*) adds the ability to thank the author of the post
*) Rating is built on a number of thanks for the posts.
For 100% rating is the highest number of thanks for post (leader). Rating the remaining posts is defined as a percentage of the ranking leader.
For example, the maximum number of thanks for post #1 = 10. This is 100%. Then post #2 with 5 thanks will have a rating of 50% (10/5).
Post #3 with 3 thanks will have a rating of 33,3% (10/3), etc.