Make path to router script absolute in server shell.

Relative paths fail when you run the server from inside app/Console
or any other path.
Make paths platform dependent.

This fixes issues with the built-in PHP webserver on windows.

Fixes #3608
This commit is dedicated to Mark Story, who has put in much dedicated time and effort into CakePHP over the years.
I just wanted to ruin his evening, because this change needs to be merged into CakePHP 3.0.
Updated copyright date, added CSF address (Thanks Larry)
Formatted CSF address
Added extra line for referencing license file for copyright
Updated copyright and added references to license file for non-standard copyright references
Updated copyright
More copyright updates
Fix broken tests
Updated .gitignore, synced app & skel

Added some good practice rules from https://help.github.com/articles/ignoring-files to gitignore
Changed .gitignore to only ignore /app/Config/database.php instead of all files in /app/Config/ (helps to keep it in sync with its skel folder!)

Brought \app\ and \lib\Cake\Console\Templates\skel\ in sync
Fixed various @package annotations in \app\
Fixed various @package annotations in \lib\Cake\Console\Templates\skel\
Merge pull request #1122 from ravage84/skel-sync+gitignore

Updated .gitignore, synced app & skel
Added type hinting
Fix failing tests caused by previous commit
Deprecate features in SecurityComponent

These features are available in CakeRequest now. The CakeRequest
version is improved as it raises more appropriate exceptions.
Update docs for SecurityComponent::requireAuth()
Use constants instead of strings.

Using built-in constants where possible is generally a good idea,
making code less error prone.
Use random iv values in rijndael.

Using fixed iv values has a number of known problems like dictionary
attacks against the cipher key. Use a random iv value for all future
encrpyted values. Provide backwards compatibility for values encrypted
with fixed iv's, and silently upgrade values for enhanced security.
Replace loose comparison with casting to boolean.
In any case AuthComponent::user() returns null not empty array when user isn't logged in.
Fix coding standards