update translations for master

and force-fix errors using pocheck

Change-Id: Ib2c4218faaa153151595024d052cc93d32037d4b

source/el/cui/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: 2018-10-21 20:57+0200\n"
-"PO-Revision-Date: 2018-10-11 19:33+0000\n"
+"PO-Revision-Date: 2018-10-23 10:02+0000\n"
 "Last-Translator: Dimitris Spingos <dmtrs32@gmail.com>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "Language: el\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: 1539286428.000000\n"
+"X-Generator: Pootle 2.8\n"
+"X-POOTLE-MTIME: 1540288954.000000\n"
 
 #: cui/inc/personalization.hrc:31
 msgctxt "RID_SVXSTR_PERSONA_CATEGORIES"
@@ -411,7 +411,7 @@ msgstr "Αφαίρεση από τα αγαπημένα"
 #: cui/inc/strings.hrc:103
 msgctxt "RID_SVXSTR_MISSING_CHAR"
 msgid "Missing character"
-msgstr ""
+msgstr "Ελλείπον χαρακτήρας"
 
 #: cui/inc/strings.hrc:104
 msgctxt "RID_SVXSTR_ADD_FAVORITES"
@@ -1630,7 +1630,7 @@ msgstr "Εφαρμογή του θέματος..."
 #: cui/inc/strings.hrc:374
 msgctxt "RID_SVXSTR_INVALIDPERSONAURL"
 msgid "Please enter a valid theme address or a search term."
-msgstr ""
+msgstr "Παρακαλούμε, εισάγετε έγκυρη διεύθυνση θέματος ή όρο αναζήτησης."
 
 #: cui/inc/strings.hrc:376
 msgctxt "RID_SVXSTR_TABLE_PRESET_NONE"
@@ -10587,7 +10587,7 @@ msgstr "Σημάδι γραμμής υπογραφής"
 #: cui/uiconfig/ui/signsignatureline.ui:56
 msgctxt "signsignatureline|ok"
 msgid "Sign"
-msgstr ""
+msgstr "Υπογραφή"
 
 #: cui/uiconfig/ui/signsignatureline.ui:113
 msgctxt "signsignatureline|edit_name"