Add GUI for the new choice

content/treestyletab/config.xul

@@ -750,6 +750,7 @@
 			oncommand="syncEnabledState(this, this.value == 0);"
 			sync-enabled-state-targets="extensions.treestyletab.closeRootBehavior-check">
 			<radio value="2" label="&config.closeParentBehavior.close;"/>
+			<radio value="5" label="&config.closeParentBehavior.replaceWithGroupTab;"/>
 			<radio value="3" label="&config.closeParentBehavior.promoteFirst;"/>
 			<radio value="0" label="&config.closeParentBehavior.promoteAll;"/>
 			<hbox align="center">

locale/cs/treestyletab/treestyletab.dtd

@@ -131,6 +131,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "Povýšit prvního potomka na rodičovský panel">
 <!ENTITY config.closeParentBehavior.promoteAll   "Povýšit všechny potomky na úroveň rodičovského panelu">
 <!ENTITY config.closeParentBehavior.detach       "Osvobodit potomky z celého stromu">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "Povýšit prvního potomka na rodičovský panel, pokud původní rodič sám neměl rodiče">
 
 <!ENTITY config.focusMode "Přepnout na následující/předchozí panel pomocí Ctrl-Tab i přesto, že není vidět">

locale/da-DK/treestyletab/treestyletab.dtd

@@ -145,6 +145,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "Gør første underfane til hovedfane">
 <!ENTITY config.closeParentBehavior.promoteAll "Gør alle underfaner til hovedfaner">
 <!ENTITY config.closeParentBehavior.detach "Frigør underfaner fra træet">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst "Gør første underfane til hovedfane, hvis den lukkede fane er den første">
 
 <!ENTITY config.focusMode "Flyt fokus til næste/forrige fane, selv om den ikke er synlig, med Ctrl-Tab">

locale/de-DE/treestyletab/treestyletab.dtd

@@ -145,6 +145,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "Das geschlossene Tab durch das erste untergeordnete ersetzen">
 <!ENTITY config.closeParentBehavior.promoteAll   "Untergeordnete Tabs auf die Ebene des geschlossenen Tabs verschieben">
 <!ENTITY config.closeParentBehavior.detach        "Untergeordnete Tabs ganz aus dem Zweig ausgliedern">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "Das geschlossene Tab durch das erste untergeordnete ersetzen, wenn das geschlossene Tab kein übergordnetes hatte">
 
 <!ENTITY config.focusMode "Strg+Tab selektiert auch nicht sichtbare Tabs">

locale/en-US/treestyletab/treestyletab.dtd

@@ -131,6 +131,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "Promote the first child tab as the new parent">
 <!ENTITY config.closeParentBehavior.promoteAll   "Promote all child tabs as the level of the closed parent tab">
 <!ENTITY config.closeParentBehavior.detach       "Liberate child tabs from the tree">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "Promote the first child tab as the new parent, if the closed parent has no parent">
 
 <!ENTITY config.focusMode "Focus to the next/previous tab even if it is invisible, by Control-Tab">

locale/es-ES/treestyletab/treestyletab.dtd

@@ -141,6 +141,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "Promover la primer pestañas como madre">
 <!ENTITY config.closeParentBehavior.promoteAll   "Promover todas las pestañas hijas al nivel de la pestaña cerrada">
 <!ENTITY config.closeParentBehavior.detach        "Liberar las hijas del árbol">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "Promover la primer hija como la nueva madre, si la madre cerrada no tiene madres">
 <!--ENTITY config.attachChildrenToGrandParentOnRemoveTab "Liberar las pestañas hijas del árbol cuando el árbol es cerrado"-->
 

locale/fr-FR/treestyletab/treestyletab.dtd

@@ -132,6 +132,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "Promouvoir le premier onglet enfant en nouveau parent">
 <!ENTITY config.closeParentBehavior.promoteAll   "Promouvoir tous les onglets enfants au même niveau que l'onglet parent fermé">
 <!ENTITY config.closeParentBehavior.detach       "Sortir les onglets enfants de l'arborescence">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "Promouvoir le premier onglet enfant en nouveau parent, si le parent fermé n'a pas de parent">
 
 <!ENTITY config.focusMode "Activer l'onglet suivant/précédent même s'il n'est pas visible par Control-Tab">

locale/it-IT/treestyletab/treestyletab.dtd

@@ -141,6 +141,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "Promote the first child tab as the new parent">
 <!ENTITY config.closeParentBehavior.promoteAll   "porta le sottoschede al livello della scheda principale">
 <!ENTITY config.closeParentBehavior.detach        "elimina le sottoschede dall'albero">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "Promote the first child tab as the new parent, if the closed parent has no parent">
 <!--ENTITY config.attachChildrenToGrandParentOnRemoveTab "Elimina le sottoschede dall'albero alla chiusura della scheda principale"-->
 

locale/ja/treestyletab/treestyletab.dtd

@@ -135,6 +135,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "最初の子タブを新しい親にする">
 <!ENTITY config.closeParentBehavior.promoteAll   "閉じた親タブの階層に子孫のタブを移動する">
 <!ENTITY config.closeParentBehavior.detach       "子孫のタブをツリーから解放する">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "代わりにグループ化用のダミーのタブを開いてツリーを維持する">
 <!ENTITY config.closeRootBehavior.promoteFirst   "最上位の親タブを閉じた時だけは、最初の子タブを新しい親にする">
 
 <!ENTITY config.insertNewChildAt.caption "新しい子タブを開く位置">

locale/pl/treestyletab/treestyletab.dtd

@@ -140,6 +140,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "promuj pierwszą kartę potomną na kartę macierzystą">
 <!ENTITY config.closeParentBehavior.promoteAll   "promuj wszystkie potomne karty na poziom zamkniętej karty macierzystej">
 <!ENTITY config.closeParentBehavior.detach        "odłączaj karty potomne od drzewa">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "promuj pierwszą potomną, jeśli zamykana karta nie ma macierzystej">
 
 <!ENTITY config.focusMode "Skrót [Ctrl+Tab] uaktywnia następną/poprzednią kartę nawet jeśli jest niewidoczna">

locale/ru/treestyletab/treestyletab.dtd

@@ -138,6 +138,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "Сделать первую дочернюю вкладку новой родительской">
 <!ENTITY config.closeParentBehavior.promoteAll   "Переместить все дочерние вкладки на уровень закрытой родительской вкладки">
 <!ENTITY config.closeParentBehavior.detach        "Переместить дочерние вкладки из дерева">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "Сделать первую дочернюю вкладку новой родительской, если закрытая родительская вкладка не имела родителя">
 
 <!ENTITY config.focusMode "Переходить по Ctrl+Tab на следующую/предыдущую вкладку даже если она скрыта">

locale/sv-SE/treestyletab/treestyletab.dtd

@@ -144,6 +144,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "Befordra den första underordnade fliken till ny överordnad flik">
 <!ENTITY config.closeParentBehavior.promoteAll   "Befordra alla underordnade flikar till nivån för den stängda överordnade fliken">
 <!ENTITY config.closeParentBehavior.detach       "Frigör underordnade flikar från trädet">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "Befordra den första underordnade fliken till ny överordnad, om den stängda fliken var högsta överordnade flik">
 
 <!ENTITY config.focusMode "Fokusera på nästa/föregående flik även om den är osynlig, m.h.a. Ctrl+Tabb">

locale/zh-CN/treestyletab/treestyletab.dtd

@@ -144,6 +144,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "提升首个子标签为父标签">
 <!ENTITY config.closeParentBehavior.promoteAll   "提升所有子标签到父标签的级别">
 <!ENTITY config.closeParentBehavior.detach       "让子标签脱离树状关系">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "若父标签之上无父标签，则提升首个子标签为父标签">
 
 <!ENTITY config.focusMode "通过“Ctrl-Tab”切换标签时可切换到折叠起来的标签上。">

locale/zh-TW/treestyletab/treestyletab.dtd

@@ -135,6 +135,7 @@
 <!ENTITY config.closeParentBehavior.promoteFirst "提升第一個子分頁到父分頁所在階層">
 <!ENTITY config.closeParentBehavior.promoteAll   "所有子分頁都提升到父分頁所在階層">
 <!ENTITY config.closeParentBehavior.detach  "從該樹釋放所屬子分頁">
+<!ENTITY config.closeParentBehavior.replaceWithGroupTab "Replace closed parent with a dummy tab and keep the tree">
 <!ENTITY config.closeRootBehavior.promoteFirst   "只有關閉最頂層的父分頁時，才提升第一子分頁為父分頁">