add the concept of a preview date
add a filter that redirects to the preview page for all urls
add a preview page (placeholder)
redirect from the preview page when not in preview

This is to catch people who either bookmark the preview page or get there via a search engine
split the main layout apart into smaller sections so that it can be reused
add a coming soon page
add the concept of a closed conference, and make sure all the redirects happen
Add null checks
review feedback
Fix the anonymous user queries

Anonymous votes now have a null user id instead of 0
Fix a crash
Merge pull request #291 from adrianbanks/fix-anonymous-voting-queries

Fix the anonymous user queries
include the jqueryui css file
Merge branch 'fix-bar-charts-in-voting' into staging
add a new model for the login methods of a user
add a new partial view to display the login methods
add the ability to determine what logins a user has
wire the new logic into the ui
Fix the tests
remove an unused style sheet