Prepare 2.0 release

Fix prefix based on locale

Similar RoutesResponse instantiation is done in https://github.com/FriendsOfSymfony/FOSJsRoutingBundle/blob/master/Controller/Controller.php#L97. But without this fix, outputs from controller and command are not equal, when JMSI18nRoutingBundle + `--locale` option are used.
Conflicts:
	Command/DumpCommand.php

Fix regression introduced by fix for Symfony 3, check for undefined s…

…chemes key (FriendsOfSymfony#288)

* Fix regression introduced by fix for Symfony 3, check for undefined schemes key
* Fix tests and add test for new way of scheme definition
* Add additional check in schemes usage
* Remove duplicate check in router.js and revert changes to existing tests

Merge pull request FriendsOfSymfony#286 from tobias-93/fix-symfony3-1.x

Fix for new way of handling scheme in Symfony 3.0 (1.x)

Merge branch '1.x'

Merge pull request FriendsOfSymfony#215 from vadim2404/fix_routing_de…

…precation

Fix deprecation notice at routing.xml

Marked HHVM as officially supported

Fixed the debug command for Symfony 2.4+

This backports the fixes done by @ClementGautier in the 2.0 version of
the bundle.
Closes FriendsOfSymfony#127

Fix router.js

[doc] fix typo