add repositories replace_file json

app/views/repositories/replace_file.json.jbuilder

@@ -0,0 +1,11 @@
+json.name @file['content']['name']
+json.sha @file['content']['sha']
+json.size @file['content']['size']
+json.content @file['content']['content']
+json.encoding @file['content']['encoding']
+json.pr_id @pull_issue.try(:id)
+json.commit do
+  json.message @file['commit']['message']
+  json.author @file['commit']['author']
+  json.committer @file['commit']['committer']
+end