Onboarding tweaks (#272)

* Small fix to side menu rendering

* Change onboarding to use an explicit 'is onboarding' mode to more clearly control the flow

* Add a progress bar to the welcome banner

* Dont show the 'unfollow button' on posts in weird times (close #271)

* Improve the empty state of the feed

* Only suggest recent posts

src/state/models/shell-ui.ts

@@ -118,6 +118,7 @@ export class ShellUiModel {
   activeLightbox: ProfileImageLightbox | ImagesLightbox | undefined
   isComposerActive = false
   composerOpts: ComposerOpts | undefined
+  isOnboarding = false
 
   constructor(public rootStore: RootStoreModel) {
     makeAutoObservable(this, {
@@ -185,4 +186,13 @@ export class ShellUiModel {
     this.isComposerActive = false
     this.composerOpts = undefined
   }
+
+  setOnboarding(v: boolean) {
+    this.isOnboarding = v
+    if (this.isOnboarding) {
+      this.rootStore.me.mainFeed.switchFeedType('suggested')
+    } else {
+      this.rootStore.me.mainFeed.switchFeedType('home')
+    }
+  }
 }