DOD for UI development

Use this as a kind of checklist whenever you develop something in the UI of SCM-Manager, regardless whether you are developing core features or plugins.

	Don't forget to
☐	use imports with @scm-manager, eg. @scm-manager/ui-components
☐	let buttons have whitespace
☐	update german translation
☐	add help icons to input components
☐	not use colors directly, but refer to is-primary or is-warning
☐	make sure your view works on mobile devices
☐	document extension points