Project tree view and creation (#203)

* Implement creating and importing new projects

* Add downloading a zip of a project

* Project validation (WIP)

* Add project side panel, remove project pages

* Project file saving

* Add file tree actions to rename and delete

* Fix file creation auto focus

* Add button to save file from menu

* Add project creation

* Fix specificity on version switcher button

* Update default version to 1.19

* List project files by type, remember project and delete project

src/app/components/generator/ProjectDeletion.tsx

@@ -0,0 +1,27 @@
+import { Analytics } from '../../Analytics'
+import { useLocale, useProject } from '../../contexts'
+import { Btn } from '../Btn'
+import { Modal } from '../Modal'
+
+interface Props {
+	onClose: () => void,
+}
+export function ProjectDeletion({ onClose }: Props) {
+	const { locale } = useLocale()
+	const { projects, project, deleteProject } = useProject()
+
+	const doSave = () => {
+		Analytics.deleteProject(projects.length, project.files.length, 'menu')
+		deleteProject(project.name)
+		onClose()
+	}
+
+	return <Modal class="file-modal" onDismiss={onClose}>
+		<p>{locale('project.delete_confirm.1', project.name)}</p>
+		<p><b>{locale('project.delete_confirm.2')}</b></p>
+		<div class="button-group">
+			<Btn icon="trashcan" label={locale('project.delete')} onClick={doSave} class="danger" />
+			<Btn label={locale('project.cancel')} onClick={onClose} />
+		</div>
+	</Modal>
+}