For anyone who's still interested: it can't be done properly . The menutext is hardcoded into the CMSMain_left.js file (around line 665) - in the indexvalues of the TreeContextMenu array. These indexvalues are then used in the LeftAndMain.js createContextMenu() function to create the contextmenu's innerHTML...
So my suggestion would be:
- replace the readable text indexvalues by something more 'symbolic' in cms/javascript/CMSMain_left.js around line 665
- translate them in cms/javascript/LeftAndMain.js around line 825 using something like translatedMenuItemName = ss.i18n._t('CONTEXTMENU.' + menuItemName, menuItemName);
- provide proper translations in cms/javascript/lang/en_US.js ao
Cheers, Martine
(Now if only I remembered how to properly do a patchfile )