Add 'before' option to showlog
Fix removing of funding records on delete

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#	modified:   voldb
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# Untracked files:
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#	LOGS/
#	NOTES.invoice
#	SKIP.list
#	TODO
#	checkfunds
#	fund_dates.txt
#	fund_redo.pl
#	fundmap.txt
#	inv_2015_05_send.txt
#	inv_2015_06_send.txt
#	inv_2015_07_send.txt
#	purchase.in
#	purchase.sh
#	purchase_init.pl
#	tmp/
#	unpaid.txt