I18N: Update translation (Italian)

Currently translated at 99.3% (1663 of 1674 strings)

po/it_IT.po

@@ -8,7 +8,7 @@ msgstr ""
 "Project-Id-Version: ScummVM 1.3.0svn\n"
 "Report-Msgid-Bugs-To: scummvm-devel@lists.scummvm.org\n"
 "POT-Creation-Date: 2021-11-13 14:33+0000\n"
-"PO-Revision-Date: 2021-11-05 17:05+0000\n"
+"PO-Revision-Date: 2021-11-13 18:03+0000\n"
 "Last-Translator: Walter Agazzi <tag2015@gmail.com>\n"
 "Language-Team: Italian <https://translations.scummvm.org/projects/scummvm/"
 "scummvm/it/>\n"
@@ -686,46 +686,38 @@ msgstr "???"
 
 #: gui/launcher.cpp:193
 msgid "Select Group by"
-msgstr ""
+msgstr "Raggruppamento"
 
 #. I18N: Group name for the game list
 #: gui/launcher.cpp:202
-#, fuzzy
-#| msgid "None"
 msgctxt "group"
 msgid "None"
 msgstr "Nessuno"
 
 #. I18N: Group name for the game list, grouped by the first letter of the game title
 #: gui/launcher.cpp:204
-#, fuzzy
-#| msgid "First page"
 msgid "First letter"
-msgstr "Prima pagina"
+msgstr "Iniziale"
 
 #. I18N: Group name for the game list, grouped by game series
 #: gui/launcher.cpp:208
 msgid "Series"
-msgstr ""
+msgstr "Serie"
 
 #. I18N: Group name for the game list, grouped by game publisher
 #: gui/launcher.cpp:210
 msgid "Publisher"
-msgstr ""
+msgstr "Editore"
 
 #. I18N: Group name for the game list, grouped by language
 #: gui/launcher.cpp:212
-#, fuzzy
-#| msgid "Language:"
 msgid "Language"
-msgstr "Lingua:"
+msgstr "Lingua"
 
 #. I18N: Group name for the game list, grouped by game platform
 #: gui/launcher.cpp:214
-#, fuzzy
-#| msgid "Platform:"
 msgid "Platform"
-msgstr "Piattaforma:"
+msgstr "Piattaforma"
 
 #: gui/launcher.cpp:230 engines/dialogs.cpp:95
 msgid "~Q~uit"