[wifi-login-pages] Set page title

[nemesifier]

For each page of the app we should have a title, eg: {page_title} - {organization_name}.

We should have a title attribute in the org-config of each component, translatable, eg:

registration_form:
    title:
        en: "Sign up"

We should add a test for each component to ensure the tile is changed as expected.

Also the main title should be allowed to be multilingual, now we have:

client:
  # <title> value
  title: "WiFi Login"

we shall switch to:

client:
  # <title> value
  title:
    en: "WiFi Login"
    it: "Accesso WiFi"
    # other languages...

[sankha555]

I am working on this

[jalajcodes]

As Sankha's pr doesn't fix this issue, I am working on it.