Merge pull request #2 from aybbou/master

Update
The function getTopXInventors(, ) is added : gets top  inventors from  if defined (allows a better time-rendering in the front-end)
Adapted the controller to the InventorRepository function getTopXInventors(, )
Slim changes : CSS & HTML
Merge pull request #14 from younesherlock/1.2

Inventors retrieval enhanced