Use aria-labelledby for conversations

app/views/conversations/_messages.haml

@@ -7,8 +7,16 @@
         = owner_image_tag(:thumb_small)
       .media-body
         = form_for [conversation, Message.new], html: {class: "control-group"} do |message|
-          = message.text_area :text, rows: 5, tabindex: 1, class: "form-control form-group"
-          = message.submit t("conversations.show.reply").capitalize,
+          .form-group
+            %label#messageLabel.sr-only{for: "message_text"}
+              = t("conversations.new.message")
+            = message.text_area :text,
+                                rows:     5,
+                                tabindex: 1,
+                                class:    "form-control form-group",
+                                aria:     {labelledby: "messageLabel"}
+
+          = message.submit t("conversations.show.reply"),
                             "data-disable-with" => t("conversations.show.replying"),
                             class: "btn btn-primary pull-right", tabindex: 2
           .clearfix

app/views/conversations/_new.haml

 .container-fluid
   = form_for Conversation.new, html: {class: "form-horizontal form_do_not_clear"}, remote: true do |conversation|
     .form-group
-      %label{ for: 'contact_ids' }
-        = t('.to')
+      %label#toLabel{for: "contact_ids"}
+        = t(".to")
       = text_field_tag "contact_autocomplete", nil, class: "form-control"
     .form-group
-      %label{ for: 'conversation_subject' }
-        = t('.subject')
-      = conversation.text_field :subject, class: 'input-block-level form-control'
+      %label#subjectLabel{for: "conversation_subject"}
+        = t(".subject")
+      = conversation.text_field :subject,
+                                class: "input-block-level form-control",
+                                aria:  {labelledby: "subjectLabel"}
     .form-group
-      = text_area_tag "conversation[text]", '', rows: 5, class: 'input-block-level form-control'
+      %label#messageLabel.sr-only{for: "conversation_text"}
+        = t(".message")
+      = text_area_tag "conversation[text]",
+                      "",
+                      rows:  5,
+                      class: "input-block-level form-control",
+                      aria:  {labelledby: "messageLabel"}
     .form-group
       = conversation.submit t('.send'), 'data-disable-with' => t('.sending'), class: 'btn btn-primary pull-right'

config/locales/diaspora/en.yml

@@ -352,6 +352,7 @@ en:
       to: "To"
       subject: "Subject"
       subject_default: "No subject"
+      message: "Message"
       send: "Send"
       sending: "Sending..."
       abandon_changes: "Abandon changes?"