Add section in the User's settings to register the protocol handler

closes #7833

app/assets/javascripts/app/pages/settings.js

@@ -15,6 +15,10 @@ app.pages.Settings = Backbone.View.extend({
       form: $("#post-default-aspects")
     });
     $("#update_profile_form").areYouSure();
+
+    $("#register-protocol-handler").click(function() {
+      Diaspora.ProtocolHandler.register();
+    });
   }
 });
 // @license-end

app/assets/javascripts/helpers/protocol_handler.js

@@ -19,5 +19,3 @@ Diaspora.ProtocolHandler = {
     return true;
   }
 };
-
-Diaspora.ProtocolHandler.register();

app/views/users/_edit.haml

@@ -180,6 +180,16 @@
             .clearfix= f.submit t(".change"), class: "btn btn-primary pull-right", id: "change_email_preferences"
       %hr
 
+    .row
+      .col-md-12
+        %h3#protocol-handler
+          = t(".protocol_handler.title")
+        %p= t(".protocol_handler.description")
+        .form-group
+          %button.btn.btn-default#register-protocol-handler
+            = t(".protocol_handler.register")
+    %hr
+
     .row
       .col-md-6.account-data
         %h3= t(".export_data")

config/locales/diaspora/en.yml

@@ -1242,6 +1242,11 @@ en:
         lock_username: "Your username will be locked. You will not be able to create a new account on this pod with the same ID."
         no_turning_back: "There is no turning back! If you’re really sure, enter your password below."
 
+      protocol_handler:
+        title: "web+diaspora:// protocol handler"
+        description: "Clicking this button will ask your browser to install a handler that allows us to open web+diaspora:// URLs on your home pod. This is currently experimental and interactions will depend on your browser."
+        register: "Register"
+
     privacy_settings:
       title: "Privacy settings"
       strip_exif: "Strip metadata such as location, author, and camera model from uploaded images (recommended)"