Add CRedit360 logo.
Merge pull request #254 from alastairs/add-credit360-sponsor

Add CRedit360 to the sponsors
put the correct date into the meta information
Merge pull request #258 from adrianbanks/fix-date-in-meta-tags

Put the correct date into the meta information
prevent the agenda being seen unless it should be

this also restricts access to the registration and accommodation page unless registration is open
Merge pull request #252 from adrianbanks/issues/251

Fix #251 Prevent the agenda being seen unless it should be
don't use the username as the anchor
add GitHub to the sponsors
Add SkillsMatter to the sponsors
add Pluralsight to the sponsors
Update readme
remove a hangover from before we had Ninject wired in
Add a link to the archived site
add the new migrations project
Set the initial state of the database to match the manual upgrade script
always migrate to the latest schema version on startup
fix a failing test
Make a method private for now
increase the login period from 2 to 7 days
remember where the user was trying to get to so they can be redirected back there after login