Make various settings interfaces more consistent

[Rosy-iso]

Description

This PR tackles a bunch of various interfaces that looked different to the rest in one way or another and changes them visually for the sake of consistency:

• The Profile section of the Account page now has every option separated by a tiny gap like the rest.
• Polished the "Reset All Push Notifications" setting:
  • The description is now split in two lines properly and has the correct size.
  • The button is no longer unreadable and has proper colors.
  • The casing of "Reset All Push Notifications" has been fixed (was "Reset all push notifications")
• Added missing outline to the sliding sync diagnostic expand/collapse button.
• Fix the title of the "Sync" section not becoming faded alongside the setting itself when sliding sync is unavailable.
• The Commands section of the Cosmetics page now has every option separated by a tiny gap like the rest.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings