Layout to index's learning solution
Adding attribute and inactive button
Changing header of the learning solution's layout
Standardizing LearningSolution's layouts
Making validations of LearningSolutions
Removing show in learning solutions
Create auto_evaluation
Merge commit '57acf73f3f1a04927c1c9a8011f5ddb95a351c1e' into HEAD
Update .gitignore
 Implementing devise