[1.0.X] Fixed #11272 -- Made some clarifications to the overview and tutorial....

[1.0.X] Fixed #11272 -- Made some clarifications to the overview and tutorial. Thanks to jjinux for the review notes.

Merge of r11044 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@11056 bcc190cf-cafb-0310-a4f2-bffc1f526a37