Improve base href handling in Angular

[Thomas Felix]

Since we must support localhost as well as the loading of assets via IPFS, we must handle baseHref in a very strange way.

For more information or ideas regarding this topic see:

• https://symflower.com/en/company/blog/2021/path-independent-angular/
• https://shekhargulati.com/2017/07/06/angular-4-use-of-base-href-and-deploy-url-build-options/
• http://www.projectcodify.com/angular-set-base-url-dynamically

[Thomas Felix]

It seems like the current variant already works but testing is still ongoing.