tahoe: Mark Tahoe-LAFS as an advanced app

Tahoe LAFS is an app requiring some technical knowledge to use and its support
in FreedomBox is experimental. The use case of a cluster of FreedomBoxes running
Tahoe-LAFS nodes isn't tested yet. It's intended use case as a backend for the
backups app isn't implemented yet.

- Fixed functional test implementation for advanced mode
- Did not fix failing Tahoe-LAFS tests, keeping them skipped for now.

Signed-off-by: Joseph Nuthalapati <njoseph@riseup.net>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>

functional_tests/features/tahoe.feature

@@ -25,6 +25,7 @@ Feature: Tahoe-LAFS distribute file storage
 
 Background:
   Given I'm a logged in user
+  And advanced mode is on
   And the domain name is set to mydomain.example
   And the tahoe application is installed
   And the domain name for tahoe is set to mydomain.example

functional_tests/support/system.py

@@ -75,7 +75,7 @@ def set_home_page(browser, home_page):
 
 def set_advanced_mode(browser, mode):
     nav_to_module(browser, 'config')
-    advanced_mode = browser.find_by_name('configuration-advanced_mode')
+    advanced_mode = browser.find_by_id('id_advanced_mode')
     if mode:
         advanced_mode.check()
     else:

plinth/modules/tahoe/__init__.py

@@ -71,7 +71,7 @@ class TahoeApp(app_module.App):
         super().__init__()
         menu_item = menu.Menu('menu-tahoe', name, short_description,
                               'tahoe-lafs', 'tahoe:index',
-                              parent_url_name='apps')
+                              parent_url_name='apps', advanced=True)
         self.add(menu_item)
 
         shortcut = frontpage.Shortcut(