Add basic preloading for nodeinfo/config

Doesn't work with dev server so needs to be deployed on a real instance to be tested, or you can copy the preloaded info from a real live server to your index.html.

see for more info pleroma!2381 (merged)

Additionally I moved stickers/TOS away from the block that blocks UI

src/boot/after_store.js

@@ -25,11 +25,11 @@ const preloadFetch = async (request) => {
   if (!data || !data[request]) {
     return window.fetch(request)
   }
-  const requestJson = atob(data[request])
+  const requestData = atob(data[request])
   return {
     ok: true,
-    json: () => JSON.parse(requestJson),
-    text: () => requestJson
+    json: () => JSON.parse(requestData),
+    text: () => requestData
   }
 }