Improve homepage (#245)

* Improve how generators are listed on home

* Add some icons for generators

* Remove debug

* Refactor cachedFetch and use generated changelogs

* Add limit to how many changes are shown by default

* Add more generator icons

* Refactor cards

* Fix generator icons for light theme

* Add more worldgen icons

* Add remaining generator icons

* Refactor navigation and badges style

* Group on homepage for guides and tools

* Fix header button style

* Add versions and technical changelog to homepage

* Make it clear that not all changes could be documented

src/app/services/Guides.ts

@@ -0,0 +1,20 @@
+export interface Guide {
+	id: string,
+	title: string,
+	versions?: string[],
+	tags?: string[],
+}
+
+declare var __GUIDES__: Guide[]
+
+export function getGuides() {
+	return __GUIDES__
+}
+
+export function getGuide(id: string): Guide {
+	const guide = getGuides().find(g => g.id === id)
+	if (guide === undefined) {
+		return { id, title: 'Unknown Guide' }
+	}
+	return guide
+}