Add travis support
[#1670] Fix some tests to be able to run it in JUnit
[#1670] Fix test for using Travis
[#1326] Translate some French comment
[#1668] Fix problem with openJDK (use PlayPropertyAccessor annotation, remove synthetic as it is used to indicate method created by compiler)
[#1670] Merge branch 'addTravisSupport' of github.com:xael-fry/play into xael-fry-addTravisSupport
[#1670] Modified travis icon url