$resource body data not supported for DELETE method - undocumented

[rcollette]

The documentation for $resource states that all non-GET action methods support postData, however, looking in the code, the resourceFactory function sets a variable called hasBody and does not include the DELETE method. I'm not sure why it would be excluded, in addition to the documentation not indicating this.

See https://github.com/angular/bower-angular-resource/blob/master/angular-resource.js line 518

[pkozlowski-opensource]

Duplicate of #8567, let's centralize the discussion in there.