tb-adding new homepage controller

[trungbui2000]

Adding a homepage controller and remove the homepage mapping inside the search controller. The reason I need a separate homepage controller is so the changes I made in the homepage controller would not break the functions inside the search controller and also since we are focusing on structuring the front page, creating a different controller homepage for just the homepage itself would be nice

[darraghjburke]

Closes #185

[darraghjburke]

Closed #120