Design settings page

[PedroMiguelSS]

Description

Design the settings page that will allow users to manage their account.

Acceptance Criteria

These acceptance criteria must be updated as soon as #233 is closed.

• [x] The page has a section to reset the locker idle timer
• [x] The page has a section to reset the passphrase
• [x] The page has a section to set notifications settings
• [ ] ...