improve invite users action button

app/assets/javascripts/discourse/views/modal/invite_modal_view.js

@@ -23,7 +23,7 @@ Discourse.InviteModalView = Discourse.ModalBodyView.extend({
 
   buttonTitle: (function() {
     if (this.get('saving')) return Em.String.i18n('topic.inviting');
-    return Em.String.i18n('topic.invite_reply.title');
+    return Em.String.i18n('topic.invite_reply.action');
   }).property('saving'),
 
   successMessage: (function() {

config/locales/client.en.yml

@@ -509,6 +509,7 @@ en:
 
       invite_reply:
         title: 'Invite Friends to Reply'
+        action: 'Email Invite'
         help: 'send invitations to friends so they can reply to this topic with a single click'
         email: "We'll send your friend a brief email allowing them to reply to this topic by clicking a link."
         email_placeholder: 'email address'

config/locales/client.es.yml

@@ -488,6 +488,7 @@ es:
 
       invite_reply:
         title: 'Invite Friends to Reply'
+        action: 'Email Invite'
         help: 'send invitations to friends so they can reply to this topic with a single click'
         email: "We'll send your friend a brief email allowing them to reply to this topic by clicking a link."
         email_placeholder: 'email address'

config/locales/client.id.yml

@@ -442,6 +442,7 @@ id:
 
       invite_reply:
         title: 'Invite Friends to Reply'
+        action: 'Email Invite'
         help: 'send invitations to friends so they can reply to this topic with a single click'
         email: "We'll send your friend a brief email allowing them to reply to this topic by clicking a link."
         email_placeholder: 'email address'