Ref T4103. This doesn't get everything, but takes care of most of the easy stuff.

The tricky-ish bit here is that I need to move timezones, pronouns and translations to proper settings. I expect to pursue that next.

• Grepped for loadPreferences to identify callsites.
• Changed start-of-week setting, loaded Calendar, saw correct start.
• Visited welcome page, read "Adjust Settings" point.
• Loaded Conpherence -- I changed behavior here slightly (switching threads drops the title glyph) but it wasn't consistent to start with and this seems like a good thing to push to the next version of Conpherence.
• Enabled Filetree, toggled in Differential.
• Disabled Filetree, no longer visible in Differential.
• Changed "Unified Diffs" preference to "Small Screens" vs "Always".
• Toggled filetree in Diffusion.
• Edited a task, saw sensible projects in policy dropdown.
• Viewed user profile, uncollapsed/collapsed side nav, reloaded page, sticky'd.
• Toggled "monospaced textareas", used a comment box, got appropriate fonts.
• Toggled durable column.
• Disabled title glyphs.
• Changed monospaced font to 18px/36px impact.