Fixed hardcoded URLs in show_all_courses.html
TODO: Fix image sources. I have to fix this when I have staticfiles locally
Fixed PHP-like templates in students.views
Refactored courses.show_certificates,
in favor of cleaner code
Fixed lonely div in show_certificate.html
Removed lone div in show_course.html
Optimized queries in courses.show_course_students.
It's slightly better +/- 10 queries, but still quite a lot of queries.
Slightly optimized forum.show_category's queries.
Refactored forum.views and templates in favor of cleaner code.
Merge pull request #33 from HackBulgaria/views_fixes

Views fixes