Fixed Typo and marked ThreadLocals like other real classes
enhanced formatting in ThreadPools.md
Update ThreadPools.md
Remove unused SbtOptionalThrowableExtractor
Merge pull request #3683 from benmccann/remove-optional-throwable-extractor

Remove unused SbtOptionalThrowableExtractor
Remove portion of message that says it's running from SBT. The application has no idea if that's true. In particular Gradle is now starting to support running Play applications and this message is very confusing when run from Gradle
Make WSRequestHolder#withRequestTimeout accept Long
Merge pull request #3685 from benmccann/running-app-message

Remove portion of message that says application is running from SBT
Merge pull request #3622 from gmethvin/ws-request-timeout

Signature for def withRequestTimeout(timeout: Int)
Merge pull request #3596 from domdorn/patch-1

Enhanced formatting and marked ThreadLocals like other real classes