Inconsistent version name

[larouxn]

Describe the bug
Sometimes our version name is prepending with v, something it's not. This breaks the links added in #135.

In prod we don't have a v:

In dev we do have a v:

To Reproduce
Steps to reproduce the behavior:

1. Go to the app in prod | https://postwoman.io
2. Got to the app in dev | http://localhost:3000/
3. Compare the release version tags in the footer
4. Notice they're different and the link is broken in prod

Expected behavior
They're the same, v0.1.0 on both, in this case.

[liyasthomas]

• In package.json, version is specified without v and we can't add v to package.json
• In GitHub releases, tag is specified with v

In dev mode, version is picked from package.json
Whereas at prod build, version is taken from env tag, ie: Release Tag

This might be the reason why at dev mode, version link is broken and at production link is working. We need to unify source from which tag is selected. I think we should prefer getting version from release tag

[larouxn]

Everything seems to working as desired now.