I changed several routes to have a more coherent (but unfinished)
  routing system on the webapps. In doing so I changed the following
  things:

- the main menu has now the `apps`, `runners` and `profile` menu.
`settings` disapear and the `explore` menu is changed in favour of
`browse`
- A route now list publicly the apps for a given author. A given user
uses this route to see his apps and can see specific buttons to update
and delete his apps (works only as registered user).
- A route has been created to update the app, can be accessed only as a
registered user and be owner of it. It replaced the same route that was
before in `settings/myapps/<docker_id>/update`.
- the templates have been updated accordingly.

Signed-off-by: Matthieu Berjon <matthieu.berjon@inria.fr>