DEV: fix deprecation warnings in specs

Also fixed a typo in a string key "max_pm_recepients" -> "max_pm_recipients"

config/locales/server.en.yml

@@ -335,7 +335,7 @@ en:
   user_is_suspended: "Suspended users are not allowed to post."
   topic_not_found: "Something has gone wrong. Perhaps this topic was closed or deleted while you were looking at it?"
   not_accepting_pms: "Sorry, %{username} is not accepting messages at the moment."
-  max_pm_recepients: "Sorry, you can send a message to maximum %{recipients_limit} recipients."
+  max_pm_recipients: "Sorry, you can send a message to maximum %{recipients_limit} recipients."
   pm_reached_recipients_limit: "Sorry, you can't have more than %{recipients_limit} recipients in a message."
   removed_direct_reply_full_quotes: "Automatically removed quote of whole previous post."
   secure_upload_not_allowed_in_public_topic: "Sorry, the following secure upload(s) cannot be used in a public topic: %{upload_filenames}."

lib/post_creator.rb

@@ -104,7 +104,7 @@ class PostCreator
       if names.length > max_allowed_message_recipients
         errors.add(
           :base,
-          I18n.t(:max_pm_recepients, recipients_limit: max_allowed_message_recipients)
+          I18n.t(:max_pm_recipients, recipients_limit: max_allowed_message_recipients)
         )
 
         return false

spec/models/topic_user_spec.rb

@@ -246,7 +246,7 @@ describe TopicUser do
 
       let(:topic) { post.topic }
 
-      it 'should ensure recepients and senders are watching' do
+      it 'should ensure recipients and senders are watching' do
         expect(TopicUser.get(topic, post.user).notification_level)
           .to eq(TopicUser.notification_levels[:watching])
 

spec/requests/posts_controller_spec.rb

@@ -939,7 +939,7 @@ describe PostsController do
         post "/posts.json", params: {
           raw: 'I can haz a test',
           title: 'I loves my test',
-          target_usernames: group.name,
+          target_recipients: group.name,
           archetype: Archetype.private_message
         }
 
@@ -951,7 +951,7 @@ describe PostsController do
         post "/posts.json", params: {
           raw: 'I can haz a test',
           title: 'I loves my test',
-          target_usernames: group.name,
+          target_recipients: group.name,
           archetype: Archetype.private_message
         }
 
@@ -1097,7 +1097,7 @@ describe PostsController do
           raw: 'this is the test content',
           archetype: 'private_message',
           title: "this is some post",
-          target_usernames: "#{user_2.username},#{user_3.username}"
+          target_recipients: "#{user_2.username},#{user_3.username}"
         }
 
         expect(response.status).to eq(200)
@@ -1240,7 +1240,7 @@ describe PostsController do
             raw: 'this is the test content',
             archetype: 'private_message',
             title: "this is some post",
-            target_usernames: user_2.username,
+            target_recipients: user_2.username,
             is_warning: true
           }
 
@@ -1257,7 +1257,7 @@ describe PostsController do
             raw: 'this is the test content',
             archetype: 'private_message',
             title: "this is some post",
-            target_usernames: user_2.username,
+            target_recipients: user_2.username,
             is_warning: false
           }
 
@@ -1277,7 +1277,7 @@ describe PostsController do
             raw: 'this is the test content',
             archetype: 'private_message',
             title: "this is some post",
-            target_usernames: user_2.username,
+            target_recipients: user_2.username,
             is_warning: true
           }