add an admin link to the menu bar and a link in the admin area back to the site
only show the admin link to admin users
get the correct session vote count value
Merge pull request #137 from ninjaferret/fix-session-links

Add a required extra parameter to make the links work.

Conflicts:
	DDDEastAnglia/Views/Session/_SessionDetailsPartial.cshtml
Added random ordering of sessions when voting is active.
Corrected class name.
Added missing file.
Added tests for random sorting.
Refactored session sorting to be testable.
Merge pull request #144 from SimonPStevens/randomise-sessions

Fix #136 Randomize order of sessions during voting, to prevent the first sessions getting all the votes.
Set VotingCookie expiry to close of voting.

Voting closes on 24 May, not 30 May.
Merge pull request #145 from alastairs/fix-cookie-end-date

Fix #142: fix cookie end date
Add some descriptive text about voting
Merge pull request #146 from adrianbanks/voting-instructions

Add some descriptive text about voting.

Conflicts:
	DDDEastAnglia/Controllers/SessionController.cs
Fix wrapping of new message on Sessions page.

It was being forced to wrap by the large bottom margin on the Search
box. I fixed it by dropping this value by 10px; we can revisit another
time if needed.
Merge pull request #147 from alastairs/fix-text-wrapping

Fix wrapping of new message on Sessions page.
Merge pull request #148 from adrianbanks/admin-page

Fix the vote count on the admin page. Also adds a link to the menu (only visible to admin users).
Add database project.

Add a SQL Server Data Tools project for the database schema, including an
import of the schema from the MDF file.
Fix SQLProj.
Update schema from live database.

Not really the right way round to do this, but still :smile: