Fix stop ignoring from privacy settings and on mobile

Fixes #7541

app/controllers/blocks_controller.rb

 class BlocksController < ApplicationController
   before_action :authenticate_user!
 
-  respond_to :json
-
   def create
     block = current_user.blocks.new(block_params)
 
     disconnect_if_contact(block.person) if block.save
 
-    respond_with do |format|
+    respond_to do |format|
       format.json { head :no_content }
     end
   end
 
   def destroy
-    current_user.blocks.find(params[:id]).delete
+    notice = if current_user.blocks.find(params[:id]).delete
+               {notice: t("blocks.destroy.success")}
+             else
+               {error: t("blocks.destroy.failure")}
+             end
 
-    respond_with do |format|
+    respond_to do |format|
       format.json { head :no_content }
+      format.any { redirect_back notice.merge(fallback_location: privacy_settings_path) }
     end
   end
 

app/views/users/privacy_settings.mobile.haml

@@ -2,6 +2,10 @@
 -#   licensed under the Affero General Public License version 3 or later.  See
 -#   the COPYRIGHT file.
 
+- flash.each do |name, msg|
+  .alert{class: "alert-#{flash_class name}", role: "alert"}
+    = msg
+
 - content_for :page_title do
   = t(".title")
 

spec/controllers/blocks_controller_spec.rb

@@ -26,11 +26,26 @@ describe BlocksController, :type => :controller do
       @block = alice.blocks.create(:person => eve.person)
     end
 
-    it "responds with 204" do
+    it "redirects back" do
+      delete :destroy, params: {id: @block.id}
+      expect(response).to be_redirect
+    end
+
+    it "notifies the user" do
+      delete :destroy, params: {id: @block.id}
+      expect(flash).not_to be_empty
+    end
+
+    it "responds with 204 with json" do
       delete :destroy, params: {id: @block.id}, format: :json
       expect(response.status).to eq(204)
     end
 
+    it "redirects back on mobile" do
+      delete :destroy, params: {id: @block.id}, format: :mobile
+      expect(response).to be_redirect
+    end
+
     it "removes a block" do
       expect {
         delete :destroy, params: {id: @block.id}, format: :json