Removing useless show_solution_task setting
Removing the rest of show_solution_task setting
Moving apps to the new folder apps
Build script for SASS, JS and CoffeeScript

Configuring bower and grunt. Removed jQuery and plugins from the repository.
Using SASS version of Bootstrap now.
Removed glyphicons images; .gitignore cleanup
Always show all task solutions, disable filtering
Removing some "Go back" links
Moving LaTeX templates to separated files.
Show MathContent tools only on hover.
Redirect to the home page after logout
Fixing empty group list in profile details
Fixing Task and Solution permissions and prereq.
Writing tests for Task utils
Removing deprecated and unused recommend code
Fixing homepage registration form
Adding Terms of use, page and registration form
Adding to do Tasks to the homepage, minor bug fix
Solution scoring refactor; yes/no rating

Unintuitive 1-5 scoring has been replaced with correct/incorrect
scoring, where a solution is accepted if at least 60% of the votes are
positive.
Special design has been created for yes/no scoring, which for tehnical
reasons does not use AJAX.
Additionally, Solution status dictionary has been replaced with
constants (SolutionStatus and SolutionDetailedStatus class).

New images have been added, and a list of image sources has been
created.
Other minor changes and possibly bug fixes.
Updating SOLUTION_RATE activity design
Adding filebased email backend to local.template.py