small fix, some addons

added methods to have database manager load routes, stops, and couriers
on creation (may move later to be on dbm owner). small bug found in
ScanPageFx. both the anchorpane and textfield were calling
keyActionEvent during a key event resulting in two key events being
sent. continued work on scan page. need to figure out why packages add
to the database but don't show up in the package table after going back
to OpenPage.