UPG-38: Minor adjustment to sample bloom theme.

This pull request mainly deals with minor changes to the sample bloom theme.
- Removed reference to the black and white colors in the bloom theme since these are inherited.
- Removed logo reference for bloom theme. The bloom theme is not officially supported by any university.
- Removed space in index.html file.
- Updated the docs grunt task to run the yuidoc tool in both dev and production environments.