created subsidy file
created subsidy file
created tag file
added create_tag
added deactivate_tag
add add_tag_spending
added remove_tag_spending select_tag_spending
added select_spendings_tag
added select_active_tags_binet select_tags_binet
added create_subsidy
added add_tag_subsidy
added subsidy_tag methods
added select model
removed automatic validation in creation of spendings
added validate_subsidy
added update_subsidy
solves conflict
update sql database
added add_spending_subsidy remove_spending_subsidy
added select_spendings_subsidy