Change step and project id to strings for step statuses
Add method for completing a step
When you see a step, mark it as complete
Organize project model
Change project id to integer
Show accurate percentage for projects
Calculating percentage work!
Add lesson status model
Annotate models and add lesson_status
Add belongs_to relationships to lesson_status
Add points to lessons
Relate users and projects to lesson_statuses
Helper methods to compute the next lesson or step
Fix logic error for computing nonzero points
Add todos for changing way we give points later
Add link to continue where you left off
Link to the first lesson if they have not started the project yet
Add completed item style
User knows when they have completed something
Add completed item helper