Fix nit with tag display

Fix problem where articles with long lists of tags had the entire list wrap to the next line instead of just the tags, separating the heading from the tags.
Content formatting for 400 and 403 pages

Added text-content class to content container to give list proper formatting.
Prevent long list of tags from breaking translate page.

Long lists of tags were being output without spaces and if the single line was long enough it would break the page layout.

Fixed at the output source assuming .tags is an object, however if it is a string it might be better for us to add the space in earlier in the processing of the output.
Merge pull request #2597 from stephaniehobson/prevent-long-list-from-breaking-page

Prevent long list of tags from breaking translate page.
Merge pull request #2596 from stephaniehobson/formatting-400-403

Content formatting for 400 and 403 pages
Merge pull request #2595 from stephaniehobson/wrap-tags

Fix nit with tag display