Keep environment values out of --help, and fix the uninstall order

[Gorka Gonzalo (d0ubl3g)]

• --help printed the values of HODEISHIELD_API_URL and HODEISHIELD_PROFILE ([env: HODEISHIELD_API_URL=https://…]), which end up in terminals and CI logs. Both options keep their environment binding and now show only the variable name (hide_env_values). An integration test sets both variables and an API key, and checks that none of the values appear. No secret is bound through these options; the API key is read separately and was not printed.
• Uninstall (docs: no uninstall steps for the archive and install.sh installs #197): the snippet removed the binary before rm -f "$(hodeishield config path)", so the settings were never removed. The settings now go first, and the usual completion file locations are named.
• Windows check (docs: list what Linux needs to install and verify a release, and a checksum command that works on BusyBox #195): the PowerShell example now says that the same two lines work for the MSI.
• docs/user-information.md (docs: README and help disagree with the code on login --no-browser, config set keys and the revocation screen #199): the revocation screen is Account → Applications, as in the README.

Refs #195, #197, #199.