update translations for 5.3.1 rc2

and force-fix errors using pocheck

Change-Id: I37d9df9e5daf10adc8baf905bb43c621c37d960e
(cherry picked from commit 05788c2f5a2a282905055c813b3b3504a25938c3)

source/bg/sc/uiconfig/scalc/ui.po

@@ -4,7 +4,7 @@ msgstr ""
 "Project-Id-Version: LibO 40l10n\n"
 "Report-Msgid-Bugs-To: https://bugs.libreoffice.org/enter_bug.cgi?product=LibreOffice&bug_status=UNCONFIRMED&component=UI\n"
 "POT-Creation-Date: 2016-12-01 12:11+0100\n"
-"PO-Revision-Date: 2017-02-16 14:44+0000\n"
+"PO-Revision-Date: 2017-02-28 00:50+0000\n"
 "Last-Translator: Mihail Balabanov <m.balabanov@gmail.com>\n"
 "Language-Team: none\n"
 "Language: bg\n"
@@ -14,7 +14,7 @@ msgstr ""
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "X-Accelerator-Marker: ~\n"
 "X-Generator: Pootle 2.8\n"
-"X-POOTLE-MTIME: 1487256249.000000\n"
+"X-POOTLE-MTIME: 1488243049.000000\n"
 
 #: advancedfilterdialog.ui
 msgctxt ""
@@ -5798,7 +5798,7 @@ msgctxt ""
 "tooltip_text\n"
 "string.text"
 msgid "Specify the borders of the selected cells."
-msgstr ""
+msgstr "Задайте кантовете на избраните клетки."
 
 #: notebookbar.ui
 msgctxt ""
@@ -5897,7 +5897,7 @@ msgctxt ""
 "label\n"
 "string.text"
 msgid "Page Layout"
-msgstr ""
+msgstr "Оформление на страница"
 
 #: notebookbar.ui
 msgctxt ""
@@ -5996,7 +5996,7 @@ msgctxt ""
 "label\n"
 "string.text"
 msgid "Cross-Reference"
-msgstr ""
+msgstr "Кръстосана препратка"
 
 #: notebookbar_groups.ui
 msgctxt ""
@@ -6005,7 +6005,7 @@ msgctxt ""
 "label\n"
 "string.text"
 msgid "Default"
-msgstr ""
+msgstr "По подразбиране"
 
 #: notebookbar_groups.ui
 msgctxt ""