Fix error when the benchmark repository is not specified.

Fixes "unbound variable" error in azure-deployment.sh when a custom repository is not defined in the deployment configuration.
Adding Racket Web Server test
Merge pull request #467 from fernandoacorreia/fix-unbound-variable

Fix error when the benchmark repository is not specified
Merge pull request #468 from jeapostrophe/master

Adding Racket Web Server test
Fix duplications in test names and sort numbers
Merge branch 'master' of github.com:TechEmpower/FrameworkBenchmarks
Fix another sort number