simplify Topic Type field into Topic Type field
Merge pull request #305 from atlasapi/topic-type-field

simplify Topic Type field into Topic Type field
Merge pull request #304 from atlasapi/test-using-lowercase-id-codecs

Add testing to ensure that we use lowercase id codecs for simplifying id...
Merge pull request #303 from atlasapi/mbst-6444-add-fields-to-channel-summary

Add more fields to the channel summary on items
Deal with null Image on Channel when simplifying in Channel Summary on items.
Merge branch 'fix-channel-summary' into stage