Version 0.11.8

+ implemented final version of payment tests for test_DB module.
+ ticket.Ticket.parse_bar now properly detects year on barcode.
Version 0.11.40

Stoppark now fully supports internationalization using gettext module.
+ Tariff calculation for tickets now correctly handles situation when paid_time for some ticket was less than actual parking time (delta). It is resolved by making paid_time equal to delta when such situation happens.

+ due to i18n view.qml now receives all its text string from external sources and doesn't keep anything within. It was made possible by extending Tariff and Payment classes with `_info` properties that provide necessary information already localized.

+ information about card payment now includes card status (inside, outside, etc) to provide better user experience for operator.

+ information about parking duration for tickets and refill term for cards now takes plural form into consideration and gives off better user experience.