wxGUI: menu for extensions

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@53358 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/xml/menudata.xml

@@ -894,8 +894,11 @@
           </items>
         </menu>
         <separator />
+	<menu>
+          <label>Addons extensions</label>
+          <items>
             <menuitem>
-              <label>Install extension from add-ons</label>
+              <label>Install extension from addons</label>
               <help>Installs new extension from GRASS AddOns SVN repository.</help>
               <keywords>general,installation,extensions</keywords>
               <handler>OnInstallExtension</handler>
@@ -909,12 +912,14 @@
               <command>g.extension.rebuild.all</command>
             </menuitem>
             <menuitem>
-              <label>Remove extension</label>
+              <label>Uninstall extension</label>
               <help>Removes installed GRASS AddOns extension.</help>
               <keywords>general,installation,extensions</keywords>
               <handler>OnUninstallExtension</handler>
               <command>g.extension</command>
             </menuitem>
+	  </items>
+	</menu>
         <separator />
         <menuitem>
           <label>Preferences</label>