Change the termBase for accountless mode

[SpecialAro]

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Description of Change

Change the termBase for accountless mode

Motivation and Context

This fixes #152.
Although this provides an easy fix for the problem, do we want to keep it this way? This implementation forwards the Privacy Statement and the Terms of Service on the Help menu to the Ferdium API if no server is selected (accountless mode). This may be something we don't want to do given the fact that https://api.ferdium.org/terms.html has some terms related with Accounts and https://api.ferdium.org/privacy.html to data collection - which is not true when he have an accountless option.

Maybe providing a different file (maybe a local one) for terms and privacy when in accountless mode should be a better solution. Regardless, I'll keep this PR open so the discussion can happen.

Checklist

• My pull request is properly named
• The changes respect the code style of the project (npm run prepare-code)
• npm test passes
• I tested/previewed my changes locally

[vraravam]

Looks much cleaner. Thanks for the suggestion @nathanaelhoun