erge branch '3.1'
erge branch '3.1'

* 3.1:
  Remove trailing space
  CS fixes
  Remove trailing space
  CS: apply rules
  [Yaml] Clean some messages + add test case
  [Console] simplified code
  [Form] Fix UrlType transforms valid protocols
  [SecurityBundle] Changed encoder configuration example to bcrypt

symfony/css-selector,symfony/CssSelector,symfony/css-selector,symfony/CssSelector