Gregg Horton questions

• ERROR -- omniauth: (facebook) Authentication failure
• How do you add roles rolify using cancan and devise?
• Ruby's strftime not displaying timezone offset with '%Z'
• Limiting mysql log file size
• Crontab not running ruby script
• Adding a column before another one in Rails
• Heroku rake db:migrate results in Error R13 (Attach error) -> Failed to attach to process

Gregg Horton answers