quiz-result, home, leaderboard, course-intro, course-playback

.quiz-result is now created (side-navs required to be added)
.my-courses section is added to home screen (registered +
not-registered)
.hover over table rows at leaderboard screen is changed
.course list icons on course-content tab (course-into screen) are fixed
.course-playback screen layout is fixed

- TABLES CREATED:

- MODELS CREATED:
- MODELS UPDATED:

- CONTR. CREATED:
- CONTR. UPDATED:

- SCREENS ADDED :  quiz-result (html + css)
- SCREENS UPDATED: home (html + css), leaderboard (only css),
course-intro (only css), course-playback (html + css)
Merge branch 'master' of https://github.com/theunusualsuspect/vit