Add scope for posts writeable by user, as dictated by groups and locations
Test for writeable scope
Clean up method names for editable/privileged_access stuff
Implement only_editable parameter to get endpoint
Yeah, use the correct method
Use correct method in tests too
Improve the editable_by scope
Rename a var
Change param name from only_editable to editable
Re-rename var
Merge pull request #70 from bengler/expose-only-writeable

Option to expose only writeable posts for current identity