Added long_description in MarkDown
Removed unsupported app thumbnails and use long description markdown file
template and tutorial with both Bootstrap 3 and 2
Use FontAwesome icons
Fixed bad icon class name
Changed application for project
Use alert-danger instead of alert-error (BS3)
Fix layout
Fix undefined answer value
Use more generic solution
Use more generic solution
Merge pull request #6 from PyBossa/updates

Updates