New config options:
numbering_filename_prefix (string)
Defaults to $project
numbering_method
auto
filename_derived (default)
hmml_specified
numbering_start (number)
May be used to 0-index the set
numbering_unit (renamed from "unit")
numbering_zero_pad (boolean)
This commit also fixes the size of the "?" help button and category dots
when the wider site uses box-sizing: border-box
Matt Mascarenhas
84a35b9ece
