Tweaks

* Don't show @everyone in the role picker
* Show some text on the image picker talking about Discord CDN
* Correct == in todos

reminder-dashboard/src/components/App/Mentions.tsx

@@ -16,7 +16,9 @@ export const Mentions = ({ input }) => {
             collection: [
                 {
                     trigger: "@",
-                    values: (roles || []).map(({ id, name }) => ({ key: name, value: id })),
+                    values: (roles || [])
+                        .filter((role) => role.name === "@everyone")
+                        .map(({ id, name }) => ({ key: name, value: id })),
                     allowSpaces: true,
                     selectTemplate: (item) => `<@&${item.original.value}>`,
                     menuItemTemplate: (item) => `@${item.original.key}`,