It was hard to read this online.  This should enable links where
appropriate.

Added darby's bio

now officially part of the team :)

See merge request !769

Added Darby's Picture

for her bio :)

See merge request !768

Changed the pricing model to per month and added "charged yearly"

looks like this now: ![image](https://gitlab.com/gitlab-com/www-gitlab-com/uploads/ddd9babf06aa0085ca21854573ee50b8/image.png)

Fixes #348

See merge request !764

pm pages

See merge request !761

Release manager - invisible hero.

See merge request !746

Minor edits to core team Web page

1. september -> September
2. Fix mailing list link

Closes #347

See merge request !763

1. september -> September
2. Fix mailing list link

Closes #347

Leanpub Enterprise has unfortunately closed.

See merge request !762