Add missing entries to locale/gitlab.pot

restores changes from https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/23816

locale/gitlab.pot

@@ -9283,9 +9283,6 @@ msgstr ""
 msgid "Trending"
 msgstr ""
 
-msgid "Trigger this manual action"
-msgstr ""
-
 msgid "Trigger pipelines for mirror updates"
 msgstr ""
 
@@ -9295,6 +9292,12 @@ msgstr ""
 msgid "Trigger this manual action"
 msgstr ""
 
+msgid "Trigger token:"
+msgstr ""
+
+msgid "Trigger variables:"
+msgstr ""
+
 msgid "Triggers can force a specific branch or tag to get rebuilt with an API call.  These tokens will impersonate their associated user including their access to projects and their project permissions."
 msgstr ""
 
@@ -10392,6 +10395,9 @@ msgstr ""
 msgid "importing"
 msgstr ""
 
+msgid "in"
+msgstr ""
+
 msgid "instance completed"
 msgid_plural "instances completed"
 msgstr[0] ""