Layout launcher now responds to double-clicks and Return/Space activation

terminatorlib/layoutlauncher.glade

@@ -28,6 +28,7 @@
                 <property name="model">layoutstore</property>
                 <property name="headers_clickable">False</property>
                 <property name="search_column">0</property>
+                <signal name="row-activated" handler="on_row_activated" swapped="no"/>
                 <child>
                   <object class="GtkTreeViewColumn" id="treeviewcolumn1">
                     <property name="title" translatable="yes">Layout</property>

terminatorlib/layoutlauncher.py

@@ -82,6 +82,14 @@ class LayoutLauncher:
                 self.layouttreestore.prepend([layout])
 
     def on_launchbutton_clicked(self, widget):
+        """Handle button click"""
+        self.launch_layout()
+
+    def on_row_activated(self, widget,  path,  view_column):
+        """Handle item double-click and return"""
+        self.launch_layout()
+
+    def launch_layout(self):
         """Launch the selected layout as new instance"""
         dbg('We have takeoff!')
         selection=self.layouttreeview.get_selection()