Canada SSO: simple integration tests.
Adds dosomething_campaign_get_campaign_gallery and campaign_gallery theme function
Changes per #3175 review.
Merge pull request #3175 from sergii-tkachenko/DS-379_canada-integration-tests

Canada SSO: simple integration tests.
Adds paraneue campaign-gallery tpl
Adds unpublished class/title based on campaign status
Cleanup path variables, avoid entity wrapper
Use campaign-gallery template for Campaign Group tpl
Merge pull request #3178 from aaronschachter/campaign_gallery

Campaign gallery