Creates model to represent a course
Creates a model to represent a task
Configures admin making it be able to create new courses
Creates base.html for the project
Refactors the index.html to inheritance from base.html
Refactors old index view to just receive a course slug as kwarg
Adds permalink to Course model
Creates view just to list all avaiable courses
Modifies the submit view to receive and handle the current task
Changes old index view to send the course on context
Displays the tasks of a course correctly
Fixes admin bugs
Merge branch 'feature/tasks-models' into develop