Merge branch '2.6' into 2.7

* 2.6:
  [HttpFoundation] MongoDbSessionHandler::read() now checks for valid session age
  Changed visibility of setUp() and tearDown to protected
  [WebProfilerBundle] Set debug+charset on the ExceptionHandler fallback
  Added default button class
  used HTML5 meta charset tag and removed hardcoded ones
  Revert "bug #13715 Enforce UTF-8 charset for core controllers (WouterJ)"
  fixed XSS in the exception handler
  Php Inspections (EA Extended) - static code analysis includes:
  [2.3] Remove most refs uses
  Test with local components instead of waiting for the subtree-splitter when possible

Conflicts:
	.travis.yml

Author: fabpot

DataCollector/MemoryDataCollector.php

@@ -94,7 +94,7 @@ private function convertToBytes($memoryLimit)
         } elseif (0 === strpos($max, '0')) {
             $max = intval($max, 8);
         } else {
-            $max = intval($max);
+            $max = (int) $max;
         }
 
         switch (substr($memoryLimit, -1)) {