Add empty hints for user pages

app/views/user/questions.html.haml

@@ -1,4 +1,7 @@
 #questions
+  - if @questions.empty?
+    = render "shared/empty", icon: "fa-regular fa-comment", translation_key: ".user.questions"
+
   - @questions.each do |q|
     = render 'shared/question', q: q, type: nil
 

app/views/user/show.html.haml

@@ -7,6 +7,9 @@
         = render "answerbox", a:
 
     #answers
+      - if @answers.empty?
+        = render "shared/empty", icon: "fa-regular fa-comments", translation_key: ".user.answers"
+
       - @answers.each do |a|
         = render "answerbox", a:
 

app/views/user/show_follow.html.haml

@@ -1,3 +1,6 @@
+- if @users.empty?
+  = render "shared/empty", icon: "fa-regular fa-user", translation_key: ".user.#{type}"
+
 .row.row-cols-1.row-cols-sm-2.row-cols-md-3#users
   - @users.each do |user|
     .col.pb-3

config/locales/views.en.yml

@@ -573,6 +573,11 @@ en:
         show: "Show full question"
         hide: "Hide full question"
     empty:
+      user:
+        answers: "This user hasn't answered any questions yet."
+        questions: "This user hasn't asked any questions yet."
+        follower: "This user has no followers."
+        friend: "This user is not following anyone."
     formatting:
       body_html: |
         <p>%{app_name} uses <b>Markdown</b> for formatting</p>