[#2141] Test emails with apostrophes
Merge pull request #2144 from baloo/improvements/2141-email-apostrophes

[#2141] Test emails with apostrophes
Tidied up the js filtering by consistently using scopes.
Incorporated sbt-web concerns into Play in order to reduce the repetition for sbt-web plugin configuration
Merge branch 'sbt-web' of github.com:playframework/playframework into sbt-web