Handle query string arguments in digest auth data.

Handle &, ? in digest auth data uri.

Refs #4908
Documentation correction
Merge pull request #4921 from dmromanov/patch-1

Documentation correction
Update .gitattributes

PDF is a common file that should not be modified.
Removing unrelated parameter in comment

That parameter doesn't exists in display() function (in fact is not a parameter) and is breaking the [CakePHP code standards]:https://github.com/cakephp/cakephp-codesniffer
Merge pull request #4947 from agarzon/patch-2

Removing unrelated parameter in comment
Fix views overwrite warning text
Merge pull request #4950 from bcrowe/fix-viewtask

Fix views overwrite warning text
Merge pull request #4944 from agarzon/patch-1

Update .gitattributes
Merge branch 'master' into 2.6
Merge branch '2.6' of github.com:cakephp/cakephp into 2.6