Create branch issues-35-34-and-27.
Add the cover_image_alt_text attribute to BlogPost.
Add the is_approved attribute to the blog post model and add scopes to the index view to toggle between all, approved and not approved.
Customize the columns rendered in the blog post index view by remove the body and summary columns and adding a comment count column.
Merge pull request #40 from ggrillone/issues-35-34-and-27

Issues 35 34 and 27