Beginnings of session management, authentication and presentations
Add flash messaging - needs styling
Add password resets
Add link to submit a talk
Ignore zenflow config files
Setup <body> classes
Finish setting up presentations and add ability to (un)attend
Finish setting up password resets
Finish setting up sessions
Add signed_in? helper
Updates styles for sessions, password resets and presentations
Add ability to close an alert
Merge branch 'feature/conference_sessions'