Fixes #831 - Link from Slack notification does not work for teams with subdomains

server/presenters/slackAttachment.js

@@ -1,7 +1,7 @@
 // @flow
-import { Document } from '../models';
+import { Document, Team } from '../models';
 
-function present(document: Document, context?: string) {
+function present(document: Document, team: Team, context?: string) {
   // the context contains <b> tags around search terms, we convert them here
   // to the markdown format that slack expects to receive.
   const text = context
@@ -11,7 +11,7 @@ function present(document: Document, context?: string) {
   return {
     color: document.collection.color,
     title: document.title,
-    title_link: `${process.env.URL}${document.url}`,
+    title_link: `${team.url}${document.url}`,
     footer: document.collection.name,
     text,
     ts: document.getTimestamp(),