update translations for master/6.3

and force-fix errors using pocheck

Change-Id: I04bf6657f97cf2dc94f272f401bc961a60d2fc54

source/nl/svtools/messages.po

@@ -4,7 +4,7 @@ msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: https://bugs.libreoffice.org/enter_bug.cgi?product=LibreOffice&bug_status=UNCONFIRMED&component=UI\n"
 "POT-Creation-Date: 2019-05-31 14:54+0200\n"
-"PO-Revision-Date: 2019-05-16 08:54+0000\n"
+"PO-Revision-Date: 2019-06-07 06:19+0000\n"
 "Last-Translator: kees538 <kees538@gmail.com>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "Language: nl\n"
@@ -13,8 +13,8 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "X-Accelerator-Marker: ~\n"
-"X-Generator: LibreOffice\n"
-"X-POOTLE-MTIME: 1557996846.000000\n"
+"X-Generator: Pootle 2.8\n"
+"X-POOTLE-MTIME: 1559888382.000000\n"
 
 #. To translators: tdf#125447 use no mnemonic in this string
 #: include/svtools/strings.hrc:26
@@ -26,7 +26,7 @@ msgstr "Ongedaan maken: "
 #: include/svtools/strings.hrc:28
 msgctxt "STR_REDO"
 msgid "Redo: "
-msgstr ""
+msgstr "Opnieuw:"
 
 #: include/svtools/strings.hrc:29
 msgctxt "STR_REPEAT"
@@ -4669,7 +4669,7 @@ msgstr "Om de wijzigingen van OpenGL effect te laten hebben moet %PRODUCTNAME op
 #: svtools/uiconfig/ui/restartdialog.ui:250
 msgctxt "restartdialog|reason_threading"
 msgid "For the multi-threaded calculation changes to take effect, %PRODUCTNAME must be restarted."
-msgstr ""
+msgstr "Om de wijzigingen van kracht te laten worden voor multithread-berekeningen, moet %PRODUCTNAME opnieuw worden gestart."
 
 #: svtools/uiconfig/ui/restartdialog.ui:265
 msgctxt "restartdialog|reason_mscompatible_formsmenu"