Only setting content-type to JSON if there actually is content.
Merge branch 'master' of github.com:enyo/data
Added a test for the content-type.
Only setting content-type to JSON if there actually is content.
Added a test for the content-type.
update the rest adapter test to pass the json content-type behavior
Merged lord-spam
Merge branch 'master' of https://github.com/emberjs/data
Removed the deprecated tests.
clear changedReferences after recordArray update
Merge pull request #933 from tchak/changed-references-fix

clear changedReferences after recordArray update
Merge pull request #601 from enyo/master

Only setting content-type to JSON if there actually is content