unit of measurement for temperature added
sample request: http://localhost:8080/moscow/ru/F

Conflicts:
	src/main/java/ru/yandex/autoschool/weather/models/Weather.java
	src/main/java/ru/yandex/autoschool/weather/utils/TemperatureFormatter.java
	src/test/java/ru/yandex/autoschool/weather/utils/TemperatureFormatterTest.java