Adds checks to splash view
Adds make_conference_public field to conference model
Adds splash check to todo list

Adds specs for make_conference_public
Adds routing error check in conference#show

Adds make_conference_public to conference factory

Added test
Merge pull request #247 from gopesht/add_splash_dashboard

Adds Splash Checkbox in Conference Settings
Merge pull request #255 from gopesht/adds_checks_to_splash

Adds checks to splash view
Adds admin components for conference photos