App update

Submodule web/app 1a8f586..16f9ead:
  > Add the "navigation" var in the jinja variables to include the correct navigation
  > Move the generic jinja variables to the my_render_template() function
  > Add the my_render_template() function

app @ 16f9ead6

-Subproject commit 1a8f5866b4ae04cde493ef98147de7c2fff2f957
+Subproject commit 16f9ead649ab119098c71a2e8d953623083b142f