Added the necessary styles

The theme changes required changes in css.

Added additional CSS3 transitions to improve the UI.
Added the site logo

The site logo has been extracted from the original ai file, optimised
and saved as a png24.

The file size is only 2kb, hence decided not use png8 with alpha
transparency.
Added the necessary ajax functions for favourites

Added both the ajax functions as well as scripts to add and delete
favourites.

Currently, we are not checkin nonce validity.

This needs to be implemented in the next iteration.
Config file

ignore
Added the necessary html tags for the image logo
Added the new tags to allow for the changes