Show user progress

[mgolokhov]

It would be nice if, once the quiz is completed it either took user back to the list of subjects or a main page of some sort. At this point it kind of leaves the user hanging.

Implement:

• [x] quiz summary
• [x] total progress

[mgolokhov]

Quiz summary: 100% You are the best! (70-99]% Great score! (40-70]% Not bad, but you can do better. Keep on practicing and you will succeed. [ 0-40]% Don't worry, you can pass this test better. Just read documentation and try again.

[mgolokhov]

[mgolokhov]