Update resources/lang/de/about.php, resources/lang/de/spende.php files

See merge request !1362

Resolve "rework bitcoin donation page"

Closes #793

See merge request !1360

Resolve "Übersetzungsdateien bereinigen"

Closes #849

See merge request !1358

Removed Unnecessary npm Dependencies

Closes #846

See merge request !1359

Resolve "Laravel Update"

Closes #846

See merge request !1355

Resolve "Phrasensuche geht nicht"

Closes #848

See merge request !1357

Development

See merge request !1356

Merge branch '844-sponsors-heading-on-the-english-start-page-links-to-this-gitlab' into 'development'

Resolve "Sponsors heading on the english start page links to this gitlab"

Closes #844

See merge request !1353

Resolve "Change translation for "Impressum""

Closes #836

See merge request !1352

Resolve "CSS Dateien aufräumen/zusammenfassen/verallgemeinern/..."

Closes #841

See merge request !1350

Merge branch '835-impressum-link-in-privacy-policy-should-link-to-metager-de-not-suma-ev-de' into 'development'

Resolve "Impressum link in privacy policy should link to metager.de, not suma-ev.de"

Closes #835

See merge request !1347

Resolve "Create subpage for plugin"

Closes #830

See merge request !1354

Unfortunately along the way the arrow for select fields broke.