Remove call to JTooltips / Google Web Fonts option / typo in _fluid-type.scss

I raised the issue about the JS error already on your blog. Now here is the pull request.

Also I extended backend options to allow choice whether to use Google web fonts at all.
This is a convenience option for people who don't want to use Googe Webfonts in their project. Now they don't have to comment out the GFont stuff in logic.php.
Also I found what I think must be a typo in _fluid-type.scss.