Revert "Implement default check unpaid bills"

This reverts commit 9a75014043e2aa0451a288b2cc724f070f8504b1.

Conflicts:
	bin/BillShare.apk
	bin/R.txt
	bin/classes.dex
	bin/classes/com/ericliu/billshare/R$id.class

bin/classes/com/ericliu/billshare/activity/BillEditActivity$BillEditFrag
ment.class

bin/classes/com/ericliu/billshare/activity/EvenDivisionActivity$EvenDivi
sionFragment.class
	bin/classes/com/ericliu/billshare/activity/EvenDivisionActivity.class

bin/classes/com/ericliu/billshare/dialog/TestLoaderSelectBillsDialog$Sel
ectBillsDialogListener.class

bin/classes/com/ericliu/billshare/dialog/TestLoaderSelectBillsDialog.cla
ss
	bin/resources.ap_
	gen/com/ericliu/billshare/R.java
	res/layout/checked_row.xml
	src/com/ericliu/billshare/activity/EvenDivisionActivity.java
	src/com/ericliu/billshare/dialog/TestLoaderSelectBillsDialog.java
revert back