Add Review Board

[nodiscc]

Thanks for taking the time to suggest an addition to awesome-selfhosted!

Please fill out information below:

name: "Review Board"
website_url: "https://www.reviewboard.org/"
source_code_url: "https://github.com/reviewboard/reviewboard"
description: "Extensible and friendly code review tool for projects and companies of all sizes."
licenses:
  - MIT
platforms:
  - Python
  - Deb
  - Docker
tags:
  - Software Development - Project Management
vei
demo_url: "https://demo.reviewboard.org/"

To ensure your issue is dealt with swiftly please check the following (check the boxes [x]):

• You have searched the repository for any relevant issues or PRs, including closed ones.
• Submit one item per pull request. This eases reviewing and speeds up inclusion.
• Values for platform are the main server-side requirements for the software. Don't include frameworks or specific dialects.
• Any software project you are adding to the list is actively maintained.
• If creating new tags, any tag has the minimum requirement of 3 items. If not, your addition may be inserted into Miscellaneous.