Removed ServerBenchmark

Given that prune now is testing performance quite well, and appears to
be able to reliably pick up and identify regressions in many places, and
also given that we we haven't run the benchmark in a long time, I've
removed the ServerBenchmark to simplify the build.

Also removed the NettyHandlerSpec, which depended on the same
NettyRunner that the ServerBenchmark depended on - all the tests in
there were covered by the other tests that made real HTTP connections to
the server, and so didn't just test that we were calling what we thought
we were supposed to be calling on Netty, but tested that we were calling
the right methods on Netty.

The reason I've deleted these is because they were getting quite
expensive to maintain - there was a custom implementation of a router,
custom implementation of play.api.Application, etc, and I was finding in
the implementation of many of the DI changes in Play, there was always
something in these benchmarks that was breaking that needed to be fixed,
because these tests weren't reusing any of the existing test
infrastructure provided by Play.
Merge pull request #3562 from jroper/remove-performance-tests

Removed ServerBenchmark
MultipartFormDataParser: Parts with colon in name

This fixes an issue, where the multipart/form-data parser lost
colons in the name of parts.

Adjusted the Testsuite.
More column integer conversions
add anorm support for parsing UUIDs from JDBC Strings
Merge pull request #3574 from cchantep/anorm-int-col

More anorm integer conversions
Merge pull request #3547 from domdorn/master

handle multipart fields with colon inside [2.4.x]
Turn off Javadoc errors for Netty Utils in Java 8+
Merge pull request #3576 from derekmorr/anorm-uuid-string

Add anorm support for parsing UUIDs from JDBC Strings
Replaced play.modules with config based mechanism

Introduced play.modules.enabled and play.modules.disabled to add/remove
modules from Play.
Merge pull request #3571 from richdougherty/nodoclint-for-netty-utils

Turn off Javadoc errors for Netty Utils
Merge pull request #3552 from jroper/modules-configuration

Replaced play.modules with config based mechanism