Fixed #7785 -- Added a note in the contenttypes documentation that GenericRelations must share a common field type for primary keys. Thanks to Rudolph for the suggestion and initial draft.
Fixed #7785 -- Added a note in the contenttypes documentation that GenericRelations must share a common field type for primary keys. Thanks to Rudolph for the suggestion and initial draft.

git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@7976 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django