Remove the drive entry from the user menu if already in drive

www/common/toolbar.js

@@ -415,6 +415,8 @@ define([
                     content: Messages.user_rename
                 });
             }
+            var parsed = Cryptpad.parsePadUrl(window.location.href);
+            if (parsed && parsed.type && parsed.type !== 'drive') {
                 options.push({
                     tag: 'a',
                     attributes: {
@@ -423,6 +425,7 @@ define([
                     },
                     content: Messages.login_accessDrive
                 });
+            }
             // Add login or logout button depending on the current status
             if (account) {
                 options.push({