soft delete using id that does not exist in db

The current implementation will try to create a new record when id is
not in the database.  Included are a test that demonstrates this issue
and a fix.

Note: Model->read() actually returns false, not array(), when a record
is not found.
http://api.cakephp.org/2.1/class-Model.html#_read
Improved efficiency for models with associations

Clear the 'modified' and 'updated' fields before deleting so they will
be updated.
javascript loader
Merge branch 'develop' of git://github.com/CakeDC/utils into develop
Making ListBehavior.php and SerializableBehavior.php php 5.4 compatible
Add PlaceHelper implementation
Merge branch 'develop' into feature/placeholders-helper
Add tests for PlaceHelper
Adding TreeHelper description to readme
Merge pull request #73 from CakeDC/feature/placeholders-helper

Added PlaceHelper with tests
Merge pull request #70 from zoghal/develop

 Compatibility with CakePHP 2.4
Merge pull request #71 from larryb82/develop

soft delete using id that does not exist in db
Add missing space