added mssing translations

changelogs/unreleased/ide-warn-staged-files.yml

 ---
 title: Warn user when reload IDE with staged changes
-merge_request:
+merge_request: 20857
 author:
 type: added

locale/gitlab.pot

@@ -8,8 +8,6 @@ msgid ""
 msgstr ""
 "Project-Id-Version: gitlab 1.0.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2018-07-10 16:02-0700\n"
-"PO-Revision-Date: 2018-07-10 16:02-0700\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "Language: \n"
@@ -552,6 +550,9 @@ msgstr ""
 msgid "Are you sure you want to delete this pipeline schedule?"
 msgstr ""
 
+msgid "Are you sure you want to lose unsaved changes?"
+msgstr ""
+
 msgid "Are you sure you want to remove %{group_name}?"
 msgstr ""