[dw-free] Rearrange, clean up, and comment cgi-bin/LJ/User.pm

[mark]

[commit: http://hg.dwscoalition.org/dw-free/rev/2dba2ba18e24]

http://bugs.dwscoalition.org/show_bug.cgi?id=390

Reorganize cgi-bin/LJ/User.pm so that things are in logical groups to make
reading and editing easier.

Patch by denise.

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