Indicate clearly to user that his account is not already confirmed

[dbrugne]

• [x] On homepage, navigation drawer.
• [x] Block input field in discussion when needed (as web client).
• [x] Block other features not available for him (e.g.: group request).

[yfuks]

@dbrugne Envisage a fast confirm process via SMS.

[dbrugne]

Envisage a fast confirm process via SMS => on fait pas