Bug 1453486 - Include containers.ftl in main preferences.xul to fix the containers removal dialog. r=Gijs

MozReview-Commit-ID: 6nUCRhBWJmF

--HG--
extra : rebase_source : dbf597f3ab7873da45f759858ac7763d332fbcc8

browser/components/preferences/in-content/preferences.xul

@@ -56,6 +56,7 @@
   <link rel="localization" href="branding/brand.ftl"/>
   <link rel="localization" href="browser/branding/sync-brand.ftl"/>
   <link rel="localization" href="browser/preferences/preferences.ftl"/>
+  <link rel="localization" href="browser/preferences/containers.ftl"/>
 
   <!-- Links below are only used for search-l10n-ids into subdialogs -->
   <link rel="localization" href="browser/preferences/blocklists.ftl"/>