view still doesn't display sub_total and total correctly
views modified and bill.html attached
improvements
total and sub_total problem solved
Merge branch 'dirty' of https://github.com/saloni10/LibreHatti into saloni10-dirty

Conflicts:
	src/librehatti/print/views.py
Merge branch 'saloni10-dirty' into dirty
Merge branch 'dirty' of https://github.com/piyushparkash/LibreHatti into dirty