update translations for 6.3.0 rc3

and force-fix errors using pocheck

Change-Id: I19893b4702ce96c8850c43ee4aa0c2665a971e9f
(cherry picked from commit f7fd1330c8cfdefab2a8a61f0a53f171f7f2f130)

source/is/sfx2/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: 2019-06-03 17:46+0200\n"
-"PO-Revision-Date: 2019-05-24 13:02+0000\n"
+"PO-Revision-Date: 2019-07-19 06:30+0000\n"
 "Last-Translator: Sveinn í Felli <sv1@fellsnet.is>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "Language: is\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: 1558702946.000000\n"
+"X-Generator: Pootle 2.8\n"
+"X-POOTLE-MTIME: 1563517827.000000\n"
 
 #: include/sfx2/strings.hrc:25
 msgctxt "STR_TEMPLATE_FILTER"
@@ -891,7 +891,7 @@ msgstr "Setja ~inn"
 #: include/sfx2/strings.hrc:189
 msgctxt "STR_SFX_IMPORT_ALL_IMAGES"
 msgid "<All images>"
-msgstr ""
+msgstr "<Allar myndir>"
 
 #: include/sfx2/strings.hrc:190
 msgctxt "STR_PB_SAVEACOPY"
@@ -2296,22 +2296,22 @@ msgstr ""
 #: sfx2/uiconfig/ui/linefragment.ui:55
 msgctxt "linefragment|STR_SFX_REMOVE_PROPERTY"
 msgid "Remove Property"
-msgstr ""
+msgstr "Fjarlægja eiginleika"
 
 #: sfx2/uiconfig/ui/linefragment.ui:144
 msgctxt "linefragment|SFX_ST_EDIT"
 msgid "..."
-msgstr ""
+msgstr "..."
 
 #: sfx2/uiconfig/ui/linefragment.ui:180
 msgctxt "linefragment|yes"
 msgid "Yes"
-msgstr ""
+msgstr "Já"
 
 #: sfx2/uiconfig/ui/linefragment.ui:196
 msgctxt "linefragment|no"
 msgid "No"
-msgstr ""
+msgstr "Nei"
 
 #: sfx2/uiconfig/ui/linkeditdialog.ui:8
 msgctxt "linkeditdialog|title"