Backport overwrite from 3.0 into 2.6
correct indentation
Note about parentNode() update.
Merge pull request #1344 from dereuromark/2.6-acl

2.6 acl
Merge branch 'master' into 2.6
Update docs for cakephp/cakephp#3478

Validation::between() is now Validation::lengthBetween()
Merge branch 'master' into 2.6
Update docs for cakephp/cakephp#3548
Merge branch 'master' into 2.6
Update docs for cakephp/cakephp#3604
Update docs for cakephp/cakephp#3653
Merge branch 'master' into 2.6
Update docs for cakephp/cakephp#3754
Add migration notes for cakephp/cakephp#3596
Add note about CakeRequest::setInput()

Refs cakephp/cakephp#3764
stackTrace()
add docs
Merge pull request #1475 from dereuromark/2.6-stack-trace

stackTrace()
Add deprecation info for $confirmMessage argument.
Merge pull request #1477 from ADmad/2.6

Add deprecation info for $confirmMessage argument.