Stop assuming all upperclassmen are on every packet

[mxmeinhold]

This line makes the assumption that every single upperclassman is a required signature on every packet. This may not be the case, due to e.g. changes in membership state that don't influence earlier packets. This results in a confusing list of signature counts when an upperclassman is required on only some of the packets, since they are listed as $num_signed / $num_total in the active section. This aught to be $num_signed / $num_can_sign_as_upper

packet/packet/templates/upperclassmen_totals.html

Line 39 in f61cd2b

{{ signed_count }}/{{ num_open_packets }}

This will probably require injecting more data into the upperclassmen dict here so that it's accessible in the template.

packet/packet/routes/upperclassmen.py

Lines 51 to 62 in f61cd2b

	# Sum up the signed packets per upperclassman
	upperclassmen = dict()
	misc = dict()
	for packet in open_packets:
	for sig in packet.upper_signatures:
	if sig.member not in upperclassmen:
	upperclassmen[sig.member] = 0
	if sig.signed:
	upperclassmen[sig.member] += 1
	for sig in packet.misc_signatures:
	misc[sig.member] = 1 + misc.get(sig.member, 0)