Improve blocked view of profiles (#10491)

* Revert "Fix filtering of favourited_by, reblogged_by, followers and following (#10447)"

This reverts commit 120544067f.

* Revert "Hide blocking accounts from blocked users (#10442)"

This reverts commit 62bafa20a1.

* Improve blocked view of profiles

- Change "You are blocked" to "Profile unavailable"
- Hide following/followers in API when blocked
- Disable follow button and show "Profile unavailable" on public profile as well

app/controllers/api/v1/accounts_controller.rb

@@ -10,7 +10,6 @@ class Api::V1::AccountsController < Api::BaseController
   before_action :require_user!, except: [:show, :create]
   before_action :set_account, except: [:create]
   before_action :check_account_suspension, only: [:show]
-  before_action :check_account_block, only: [:show]
   before_action :check_enabled_registrations, only: [:create]
 
   respond_to :json
@@ -76,10 +75,6 @@ class Api::V1::AccountsController < Api::BaseController
     gone if @account.suspended?
   end
 
-  def check_account_block
-    gone if current_account.present? && @account.blocking?(current_account)
-  end
-
   def account_params
     params.permit(:username, :email, :password, :agreement, :locale)
   end