Allow setting api url from the login screen (#264)

Cleanup

Use the http factory everywhere instead of the created element

Use the current domain if the api path is relative to the frontend host

Format

Prevent setting an empty url

Fix styling

Add changing api url

Add change url component

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/frontend/pulls/264
Co-Authored-By: konrad <konrad@kola-entertainments.de>
Co-Committed-By: konrad <konrad@kola-entertainments.de>

src/http-common/index.js

@@ -1,5 +1,7 @@
 import axios from 'axios'
 
-export const HTTP = axios.create({
-	baseURL: window.API_URL,
-})
+export const HTTPFactory = () => {
+	return axios.create({
+		baseURL: window.API_URL,
+	})
+}