Feature/mie 1389

The goal of this story was change the way to display large numbers of favorites into new formatted number. 
Also will display special characters for specific number (314 = "π").
When the number of the snippet is 1000000 dr.evil will be display instead of the heart of the snippet.

Example: 
 * 100 = 100
 * 1000 = 1k
 * 30999 = 30.9k      
 
 Special characters
 * 314 = π
 * 2718 = e
 * 1000000 = One Milllllllllion
The line 118 is required because if an article has 999999 favorites, and 1 user click the hearth,  Dr. evil will be display, but if the same user click again to delete his like Dr. evil will not change to the hearth.