[lightsoff] Update Icelandic translation

[Translations User D-L <translations src gnome org>]

commit 95ff12a089e8313da7366a1f8f232e82c6caaf6e
Author: Sveinn í Felli <sv1 fellsnet is>
Date:   Fri Dec 8 08:57:33 2017 +0000

    Update Icelandic translation
    
    (cherry picked from commit 991b33bfd4beb8784a94291421859fe4ddc88180)

 po/is.po |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/po/is.po b/po/is.po
index ba1f751..93da807 100644
--- a/po/is.po
+++ b/po/is.po
@@ -12,7 +12,7 @@ msgstr ""
 "Report-Msgid-Bugs-To: https://bugzilla.gnome.org/enter_bug.cgi?";
 "product=lightsoff&keywords=I18N+L10N&component=general\n"
 "POT-Creation-Date: 2017-09-21 08:39+0000\n"
-"PO-Revision-Date: 2017-12-07 08:54+0000\n"
+"PO-Revision-Date: 2017-12-08 07:51+0000\n"
 "Last-Translator: Sveinn í Felli <sv1 fellsnet is>\n"
 "Language-Team: Icelandic <translation-team-is lists sourceforge net>\n"
 "Language: is\n"
@@ -38,12 +38,17 @@ msgid ""
 "toggles it either on or off, but also toggles all the surrounding lights, "
 "too. Your objective is simple: turn off all the lights!"
 msgstr ""
+"'Slökkva ljósin' er safn af þrautum þar sem unnið er með ljósarofa. Ef smellt "
+"er á ljós er kveikt eða slökkt á viðkomandi ljósi - en einnig skipt um stöðu "
+"á öllum ljósum í kring. Markmiðið er einfalt: slökkva á öllum ljósunum!"
 
 #: ../data/lightsoff.appdata.xml.in.h:4
 msgid ""
 "Players who delight in turning off lights will enjoy the huge number of "
 "levels."
 msgstr ""
+"Leikmönnum sem gengur vel að slökkva á ljósum, er úthlutað fjöldanum öllum af "
+"leikþrepum."
 
 #: ../data/lightsoff.appdata.xml.in.h:5
 msgid "The GNOME Project"