Include booking_template tags in list.
Fix colspan for action items in line_item lists.
Update i18n_rails_helpers and has_vcards.
Fix debit/credit switch for debit invoices.
Fix credit/debit switch for booking_templates.
Fix debit/credit switch for template seeds.
Move logic to determine BankAccount from view to model; support invoice:payment tag.
Fix saving of invoice amount on create.
Whitespace changes.
Fix some migrations to allow a full migration from an empty database.
Update db/schema.rb.