Remove param $confirmMessage.

You can set the confirm message using 'confirm' key in options.
Remove $confirmMessage param.

Confirmation message can be set using 'confirm' key in options.
Document 'default' option.
Remove "default" option from HtmlHelper::link().

Adding js code to prevent default behavior of link by itself has little value.
Update bake templates.

Now using 'confirm' key in options for FormHelper::postLink()
instead of removed param $confirmMessage.
Making Table::columnType() a setter too
Adding a new method Table::_initializeSchema that users can override
Added test for _initializeSchema
Removed whitespace
Fixing test
Added a shorthand stackTrace() method
Fix API doc errors in Datasource/
Fix API doc errors in Console/ and TestSuite/
Fix API doc errors for Database/
Fix API doc errors in ORM/
Fix a few more doc block errors.
Removing extra whitespace
Merge pull request #3908 from markstory/3.0-api-docs

3.0 api docs
Merge pull request #3889 from cakephp/3.0-override-column-type

3.0 override column type
Merge pull request #3882 from ADmad/3.0-helper

3.0 helper