update translations for 6.3.1 rc2

and force-fix errors using pocheck

Change-Id: I68b4c6d31d4f902c9e1891192d433b101d6edb42
(cherry picked from commit 595d87648046bd70abf2eee0e328369f9c4be5e1)

source/lo/chart2/messages.po

@@ -4,8 +4,8 @@ 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: 2019-07-03 20:21+0200\n"
-"PO-Revision-Date: 2018-10-21 19:38+0000\n"
-"Last-Translator: Anonymous Pootle User\n"
+"PO-Revision-Date: 2019-08-22 09:27+0000\n"
+"Last-Translator: phommasy <phommasy.ai@gmail.com>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "Language: lo\n"
 "MIME-Version: 1.0\n"
@@ -13,8 +13,8 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=1; plural=0;\n"
 "X-Accelerator-Marker: ~\n"
-"X-Generator: LibreOffice\n"
-"X-POOTLE-MTIME: 1540150683.000000\n"
+"X-Generator: Pootle 2.8\n"
+"X-POOTLE-MTIME: 1566466064.000000\n"
 
 #: chart2/inc/chart.hrc:17
 msgctxt "tp_ChartType|liststore1"
@@ -966,12 +966,12 @@ msgstr "ຂອບເຂດຂໍ້ມູນ"
 #: chart2/uiconfig/ui/datarangedialog.ui:124
 msgctxt "datarangedialog|range"
 msgid "Data Range"
-msgstr ""
+msgstr "ຂອບເຂດຂໍ້ມູນ"
 
 #: chart2/uiconfig/ui/datarangedialog.ui:170
 msgctxt "datarangedialog|series"
 msgid "Data Series"
-msgstr ""
+msgstr "ຊຸດຂໍ້ມູນ"
 
 #: chart2/uiconfig/ui/dlg_DataLabel.ui:13
 msgctxt "dlg_DataLabel|dlg_DataLabels"
@@ -2884,12 +2884,12 @@ msgstr "ຕົວເລືອກ Plot"
 #: chart2/uiconfig/ui/tp_SeriesToAxis.ui:385
 msgctxt "tp_SeriesToAxis|CB_LEGEND_ENTRY_HIDDEN"
 msgid "Hide legend entry"
-msgstr ""
+msgstr "ເຊື່ອງລາຍການອະທິບາຍ"
 
 #: chart2/uiconfig/ui/tp_SeriesToAxis.ui:406
 msgctxt "tp_SeriesToAxis|label4"
 msgid "Legend Entry"
-msgstr ""
+msgstr "ລາຍການອະທິບາຍ"
 
 #: chart2/uiconfig/ui/tp_Trendline.ui:65
 msgctxt "tp_Trendline|linear"