[UI] Profile - show/hide "x password" button

[ghost]

Brief Description

OS: Windows 7 32
qTox version: v1.4.0-68-g8d225a8
Commit hash: 8d225a8
Qt: 5.5.1
…

Reproducible: Always

Steps to reproduce

1. In "profile" window, look at "profile" section.

Observed Behavior

"Remove Password" and "Change Password" is always there.

Expected Behavior

if tox-profile-isEncrypted === true then show ("Remove Password" and "Change Password")
else show ("Set new password")
hide else
fi