fix a problem with publishing a "delete" replacement document.

schema was missing a few test cases for replacements indicating a "delete". added tests, which revealed some bugs in the schema, fixed, and add unit tests in publish and obtain.

Signed-off-by: Jim Klo <jim.klo@sri.com>
update map files to accommodate resource locator as an array.
add tests to check for resource_locator as array, fix schema to accommodate.
Add test to obtain to check publish with multiple resource locator
Merge pull request #244 from jimklo/0.50.1

Fix an issue with publishing a "deleted" replacement document and harvesting a document with a resource_locator array.