add tests for client hints (Prefer and Slug headers)
don't fail tests on errors deleting test resources

At the end of many tests, we use HTTP DELETE to clean up test resources.
Don't fail a test simply because the clean up failed. It's not what's
being tested.
Merge pull request #49 from ttsanton/master

Extend Reporters
Merge pull request #50 from spadgett/master

add tests for client hints (Prefer and Slug headers)
Added list of test cases up for approval to report
Change testETagHeadersGet() to pending as HTTP makes it clear that ETag are for resource representations, ie exist
Merge pull request #51 from sspeiche/master

Change testETagHeadersGet() to pending
Renamed testPostResource in NonRDFSourceTests due to conflict
Obsolete test method in testPutBadETag

It says `NOT_IMPLEMENTED`when it really is.
Merge pull request #52 from fserena/hotfix-samename

Same name for two tests
Merge pull request #53 from fserena/patch-1

Obsolete test method in testPutBadETag
testPutBadETag is sending an ETag header

I think the right header to send the etag value should be If-Match.
Merge pull request #55 from fserena/patch-3

testPutBadETag is sending an ETag header
remove duplicate testAcceptNonRdfPost

Remove unimplemented method testAcceptNonRdfPost() from
CommonContainerTest as it's already being tested in
NonRdfSourceTest.
Merge pull request #56 from spadgett/master

remove duplicate testAcceptNonRdfPost
get rid of duplicate Slug header test

We had both testServerHonorsSlug and unimpelemented testAllowSlugUri.
We only need one test for Slug headers.
Merge pull request #57 from spadgett/master

get rid of duplicate Slug header test
Add List of Test Cases that need to be Implemented into the Coverage
Report