671 show urdr version on web page

[KattisLej]

Related issue(s) and PR(s)

This PR closes 671.

Type of change

• New feature (showing version on the website)

List of changes made

• Added the git branch and hash in webpack as a enviroment variable. In order to access this information I installed git as root in docker. I copied the same procedure to the production docker file (but haven't managed to test it)
• The main changes in the webpack file are around these variables:

const gitBranch = execSync("git rev-parse --abbrev-ref HEAD").toString().trim();
const gitHash = execSync("git rev-parse --short HEAD").toString().trim();

Screenshot of the fix

Testing

• Start URDR
• See if you get the information as shown above

Further comments

I haven't manage to test this in production mode by running the production docker image.

Definition of Done checklist

• I have made an effort making the commit history understandable
• I have performed a self-review of my own code and commented any hard-to-understand areas
• Tests and lint/format validations are passing
• My changes generate no new warnings