Site Improvements

I've made some improvements to the Road To Grammar main site:

1 Notes and PDFs can be accessed directly from the main page

2 Quizzes are slightly bigger when viewed on a desktop or laptop (good for smartboards, too).

3 Quizzes have an infobar so you can see the title of the quiz

4 A few simple cosmetic changes

* The site works on mobile devices
* Ads are kept to a minimum

Screenshots: