[1.2.X] Fixed #14426 -- Removed "mysite" import statements from examples that...

[1.2.X] Fixed #14426 -- Removed "mysite" import statements from examples that might teach people "bad habits" in regards to creating reusable apps.

Thanks to idahogray for assisting with the patch (and sorry for forgetting the attribution in the patch on trunk).

Backport of [14270] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14271 bcc190cf-cafb-0310-a4f2-bffc1f526a37