Restructures + New Evironment Variables (#1230)

* Use document base uri for react router

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Rename getAndSetUser to fetchAndSetUser

Getter should be reserved for simple get functions.
Everything that does a bit more logic should use a more meaningful verb.

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Rename getFrontPageContent to fetchFrontPageContent

Getter should be reserved for simple get functions.
Everything that does a bit more logic should use a more meaningful verb.

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Reformat code

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Use PUBLIC_URL env var in index.html

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Introduce new environment variables

For better testing (especially if you have multiple endpoints) this commit introduces
REACT_APP_BACKEND_BASE_URL, REACT_APP_FRONTEND_ASSETS_URL and REACT_APP_CUSTOMIZE_ASSETS_URL

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Remove redundant license information

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Remove redundant license information

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Fix rebase issues

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Remove unused file

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Correct parameter

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Fix run tasks

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Force use of bash

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Fix link to cypress picture

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* revert change

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* fix url

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Remove license info

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Revert rebase issues

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Add missing banner code

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Fix test url

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Useless change to trigger github

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

* Don't set backend base url because this break the mock mode detection

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

Co-authored-by: Philip Molares <philip.molares@udo.edu>

cypress/integration/intro.spec.ts

@@ -7,7 +7,7 @@
 /* eslint-disable @typescript-eslint/no-unsafe-call */
 describe('Intro page', () => {
   beforeEach(() => {
-    cy.intercept('/intro.md', 'test content')
+    cy.intercept('/mock-backend/public/intro.md', 'test content')
     cy.visit('/')
   })