added contributor badge to user profile view

app/views/user/_profile_info.html.haml

@@ -12,6 +12,10 @@
     .profile--panel-badge.panel-badge-warning
       %i.fa.fa-star
       Supporter
+  - if @user.contributor?
+    .profile--panel-badge.panel-badge-primary
+      %i.fa.fa-github
+      Contributor
   - if @user.blogger?
     .profile--panel-badge.panel-badge-info
       %i.fa.fa-pencil
@@ -43,4 +47,4 @@
         %i.fa.fa-location-arrow
         = @user.location
     = render 'user/actions', user: @user, type: :follower
-= render 'user/stats', user: @user
+= render 'user/stats', user: @user