Work around apt-get issues (c/o @codygman)

See:
https://github.com/TechEmpower/FrameworkBenchmarks/pull/834#issuecomment-57629157
GHC 7.8
Clean up Yesod code with stylish-haskell
yesod 1.4 and disable non-raw MongoDB
Set the LANG environment variable
Some Yesod (attempted) optimizations
Merge pull request #834 from snoyberg/master

Yesod updates for GHC 7.8
Fix minor bugs with installer (mongodb should work properly now)
Merge branch 'master' of https://github.com/TechEmpower/FrameworkBenchmarks
Some Yesod cleanup/optimization

* Use sendWaiResponse
* Simplify the Mongo code to avoid persistent-mongoDB
* Avoid InternalState acquisition
* Use runInUnboundThread for Yesod
Use stylish-haskell on yesod.hs
Reduce library dependencies in yesod
Update WAI to use GHC 7.8

Pinging @kazu-yamamoto
Pass in explicit core count from threads variable

Pinging @kazu-yamamoto does this make sense to you?
Merge pull request #1086 from snoyberg/master

Updates to Yesod and WAI
LGTM!
Use ServerSocketReference to scale to the number of cores.
Update README.md file.
Remove last nginx references.
Merge pull request #1088 from kevmoo/reference

Update Dart benchmark
Updating Curacao version under test to 2.6.3 and Jetty 9 container version