Merge pull request #124 from antograssiot/master

update namespaces
Fix environments typo
update NotFoundException
update MissingViewException
Merge pull request #126 from antograssiot/clean-exception

Update exception namespaces.
Adding DebugKit to the requires list.

I feel that the cakephp experience should be excelent from the start. Even
though debugkit has been aroudn for years I'm still finding people who have
no clue of its existence.
Do not conditioanlly load DebugKit
Merge pull request #127 from cakephp/add-debugkit

Adding DebugKit to the requires list.