Update devError.scala.html
Update devNotFound.scala.html
Fix typos in comments
Documentation: clarify asynchronous actions
Append the value of the vary header instead of overwriting it in the Gzip filter.
Merge pull request #2243 from billthornton/bug/gzip-filter-vary-header

Append the value of the Vary header instead of overwriting it in the Gzip filter.
Merge pull request #2187 from fernandoacorreia/doc-async

Clarify documentation on Action asynchronicity
Merge pull request #2225 from fernandoacorreia/fix-typo-given

Fix typos in comments
Merge pull request #2223 from dhruvbhatia/master

Allow Evolution/Error messages to overflow horizontally
Add injection provider to allow for dependency injection of plugins