Big improvement of the interface in the items page

Now propose 2 layout : one standard layout ( each items in line ) and one card layout ( 2 items per line )

Block the google+ source ( the image is gray now )

Changed the filtering table, it will now show word1 or word2 or word3 instead of word1 , word2 , word3

The tag are now added in the filtering/source table of the semantic search