To avoid user confusion, hide the "Remember password" checkbox whenever the
wallet is disabled.

Note that this does not affect credentials being kept for the duration of
the application(s) that set them or are currently using them. It only deals
with persistent caching of password in KDE wallet.


FIXED-IN: 4.7.4

(cherry picked from commit da6f4c128d32de782d4e70e11a083f4e20753242)