1. Modify get by dev query: perform a product of Develops and Games
	and search by developer and return game details
2. Return the search result as a grid of thumbnails.
3. Added a hover JS on thumnails, so that when mouse hovers over a thumbnail,
game details like rating, year, name and "ADD" button comes up.
TBD:// right now default thumbnail is used.
If game thumbnail availlable, replace with that.

Signed-off-by: Saikat <rychwdh2@illinois.edu>