OO-291 a bit more space to make form squeeze a bit better, typo

src/main/java/org/olat/group/ui/main/_content/group_search.html

 <div class="b_clearfix">
-	<div class="b_c33l">
+	<div class="b_c40l">
 		<div class="b_subcl">
 			$r.render("left_1")
 			$r.render("button_layout")
 		</div>
 	</div>
-	<div class="b_c66r">
+	<div class="b_c60r">
 		<div class="b_subcr">	
 			$r.render("right_1")
 		</div>

src/main/java/org/olat/group/ui/main/_i18n/LocalStrings_de.properties

@@ -50,7 +50,7 @@ search.yes=Ja
 search.no=Nein
 search.resources=In Kursen verwendet
 search.headless=Orphans
-search.headless.check=Gruppe ohne Mitglieder und Ressourcen
+search.headless.check=Gruppen ohne Mitglieder und Ressourcen
 search.id.format=Keine g\u00FCltige Gruppen-ID
 cif.displayname=Name
 cif.description=Beschreibung