Extract 'notes/per_line_notes_with_reply' partial

app/views/commits/_text_file.html.haml

@@ -20,7 +20,4 @@
         - if @comments_allowed
           - comments = @line_notes.select { |n| n.line_code == line_code }.sort_by(&:created_at)
           - unless comments.empty?
-            - comments.each_with_index do |note, i|
-              = render "notes/per_line_note", note: note
-              - @line_notes.reject!{ |n| n == note }
-            = render "notes/per_line_reply_button", line_code: line_code
+            = render "notes/per_line_notes_with_reply", notes: comments

app/views/notes/_per_line_notes_with_reply.html.haml

+- notes.each do |note|
+  = render "notes/per_line_note", note: note
+= render "notes/per_line_reply_button", line_code: notes.first.line_code