The perf_ columns in the Users table are mostly unused

[d1m0]

There are several perf_ columns in the Users table:

pref_auto_logout | boolean | not null default false | plain |
pref_speech | boolean | not null default false | plain |
pref_forget_which_product | boolean | not null default false | plain |
pref_skip_purchase_conf

They correspond to setting for individual users. Out of those the only one we are actually checking is perf_ofrget_which_product, and most of them are not used by users. Should we just rip them out and aggree on some sane defaults?

[thalvors]

I vote for less prefs. Note we do check 'Privacy' from the 'profiles' table. The profiles table duplicates all of these. I vote getting rid of both, but if we want to keep the settings we should de-duplicate them.