Text vertically overlaps in dialogs

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The default font is 9px high, but dialogs use 8px spacing. This leads to clipped descenders if strings are drawn top-to-bottom.

draw_dialog_label is the biggest offender, but the Format/Erase drive selection is also afflicted.

To fix, everything needs to do proper math rather than 3 shifts.

• [x] About
• [x] Format / Erase
• [x] Confirmation/progress: copy/move/delete/lock/unlock
• [x] Pick Selector Entry
• [x] File browser (Add/Edit Selector Entry, Copy/Move file)
• [x] Selector (the app)

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About before:

and after:

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Format/Erase before:

and after:

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Confirm before:

and after:

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Select Entry before:

and after:

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File selector:

(Note the overlaps in the radio buttons, and the items in the scrolling pane only get 8px each)

[inexorabletash]

Overlapping radio buttons fixed. Items in the scroll pane are still 8px tall

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Before:

After:

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Before:

After: