fix guitar css
add notification for bad code input
fix merge conflict
precompile assets for heroku
Merge branch 'master' of github.com:lacostenycoder/Learn.R
merge and precompile for heroku
hot fix, fix broken tests
rotate music images works better
updated assests for production after image rotate update
Merge branch 'master' of github.com:lacostenycoder/Learn.R
precompile assets and fix merge conflicts
fix erd with url to heroku
minor fixes
fix story line
fix production settings for proper url