update translations for 6.0 rc2

and force-fix errors using pocheck

Change-Id: Id698a59cad30f1ad3c37e7d078bd781bb5f2f1fd

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: 2017-12-20 08:16+0100\n"
-"PO-Revision-Date: 2017-12-12 11:02+0000\n"
+"PO-Revision-Date: 2017-12-20 15:19+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: 1513076533.000000\n"
+"X-Generator: Pootle 2.8\n"
+"X-POOTLE-MTIME: 1513783177.000000\n"
 
 #: personalization.hrc:31
 msgctxt "RID_SVXSTR_PERSONA_CATEGORIES"
@@ -8590,7 +8590,7 @@ msgstr "Επιλογές ασφαλείας και προειδοποιήσει
 #: optuserpage.ui:12
 msgctxt "optuserpage|liststore1"
 msgid "No key"
-msgstr ""
+msgstr "Κανένα πλήκτρο"
 
 #: optuserpage.ui:45
 msgctxt "optuserpage|companyft"
@@ -8800,7 +8800,7 @@ msgstr "Κατά την κρυπτογράφηση εγγράφων, να κρυ
 #: optuserpage.ui:930
 msgctxt "optuserpage|cryptographylabel"
 msgid "Cryptography"
-msgstr ""
+msgstr "Κρυπτογράφηση"
 
 #: optviewpage.ui:47
 msgctxt "optviewpage|grid3|tooltip_text"