One yaml followup

This is the followup after doing #1334 (closed)

Owner is at the start. Put deadline in front of the item. Check off when it is done.

1. Joe - Solution page needs case studies => contractor E.
2. Joe - The solutions page https://about.gitlab.com/solutions/ needs to be more like https://www.heroku.com/flow => website builder
3. Job - All solutions need a description.
4. Job - Every solution should have at least one feature
5. Job - Import should be a solution
6. Connor - #1478 (comment 33955790) lists 175 solutions but https://about.gitlab.com/features/ lists 106 instances of 'badge-container' in the source. We're missing a few, for example One integrated tool https://gitlab.com/gitlab-com/www-gitlab-com/blob/befe51fec8705c67f7ea0ec3821f85b64130d5f8/data/features.yml#L510 is missing under efficiency.
7. Connor - Missing should be added to solutions https://gitlab.com/gitlab-com/www-gitlab-com/blob/master/data/solutions.yml as specified in #1478 (closed)
8. Connor - We should add the reasoning for what we did to the readme of www-gitlab-com, together with a guide on how to modify solutions and features. Initial content can be from the issues #1334 (closed) and #1478 (closed)
9. Connor - The features and solution page should link to features.yml and solutions.yml from the existing 'a public file on GitLab.com ' link in their footer.
10. Connor - https://about.gitlab.com/solutions/ should say 'View the 5 features' instead of 'Read more' so people know in advance how much is behind something. => Let's not do this
11. Connor - https://gitlab.com/gitlab-com/www-gitlab-com/blob/master/data/solutions.yml should allow do a body text that is a few paragraphs? or will we just do it directly on the page?
12. Connor - https://about.gitlab.com/features/ now has one or two features on a row when there are only one or two with a screenshot, it should just be filled up and accept more whitespace below the other items
13. Connor - Change the first phase/solution from Chat to Idea, see #1478 (comment 36115224)
14. Connor - Add a table of contents to the top of https://about.gitlab.com/features/
15. Axil - Add missing features to features.yml #1545 (closed)
16. Axil - Too many attributes #1625 (closed)