[qmp-system] Fix BMX6 Graph page

Adapt new luci-app-bmx6 package's bmx6-graph.js file to qMp. Nodes now appear
on the topology graph page, but links are only shown with qMp trunk, not with
testing.

Partial fix for #446
Signed-off-by: Roger Pueyo Centelles <roger.pueyo@guifi.net>

packages/qmp-system/files/etc/uci-defaults/qmp_set_luci_app_bmx6

 #!/bin/sh
+
+# Move the BMX6 entry to a menu in the qMp page
 uci set luci-bmx6.luci=bmx6
 uci set luci-bmx6.luci.place="qmp Mesh"
 uci set luci-bmx6.luci.position=3
 uci set luci-bmx6.luci.json="exec:/www/cgi-bin/bmx6-info -s"
 uci set luci-bmx6.luci.ignore=0
 uci commit luci-bmx6
+
+# Update BMX6's JSON graph to match the new location of the BMX6 menu
+FILENAME="/www/luci-static/resources/bmx6/js/bmx6-graph.js"
+if [ -f $FILENAME ]; then
+	sed -i 's|/cgi-bin/luci/admin/network/BMX6/topology|/cgi-bin/luci/qmp/Mesh/topology|g' $FILENAME
+fi
+
+exit 0