Merge branch '2.7' into 2.8

* 2.7:
  updated deps
  explicitly declare supported Twig versions
  updated VENDORS for 2.7.24
  updated VENDORS for 2.7.23

Author: fabpot

composer.json

@@ -16,6 +16,7 @@
         "symfony/monolog-bundle": "^3.0.2",
         "sensio/distribution-bundle": "~5.0",
         "sensio/framework-extra-bundle": "^3.0.2",
+        "twig/twig": "^1.0||^2.0",
         "incenteev/composer-parameter-handler": "~2.0"
     },
     "require-dev": {