Allow single string related_content, and let content data be anywhere.
Merge pull request #2559 from jamalex/channel_dir_fix

Allow single string related_content, and let content data be anywhere.
add download link to content
moved the Download link before the title
Merge pull request #2565 from aronasorman/2548

add download link to content
Merge branch 'develop' into feature/2417-add-a-base-test-suite-for-ka-lite