[Console] fixes some typos and phpdoc.
Added information when an error occured during validation of an answer of a question
Merge branch '2.5' into 2.6

* 2.5:
  Added information when an error occured during validation of an answer of a question
  [Console] fixes some typos and phpdoc.
  fix phpdoc's alignment
  Minor phpcs fixes
  [ClassLoader] Fix undefined index in ClassCollectionLoader