issue #46 change Currency and double to BigDecimal

edit method getCalculateSum and getTotal
[Issue #46] Order test refactored. Order.getTotal fixed
issue #39 create SaleDao
issue #39 create SaleDao
[Issue #41] Add javadocs to methods
[Issue #41] Fixed getCalculatedSum
[Issue #41] Cleanup of unnecessary imports and tests
[Issue #41] Fixed JPA problem with multiple lists in entity
Merge branch 'issue_46_create_dao_and_jons' of https://github.com/crc83/WebCash into issue_46_create_dao_and_jons

Conflicts:
	webcash-domain/src/test/java/com/siriusif/model/SuborderTest.java
	webcash-domain/src/test/java/com/siriusif/service/model/SuborderDaoImplTest.java
	webcash-domain/webcash-domain.log
Merge branch 'issue_46_create_dao_and_jons'
Merge branch 'master' of https://github.com/crc83/WebCash

Conflicts:
	webcash-domain/src/main/java/com/siriusif/model/Good.java
	webcash-domain/src/main/java/com/siriusif/model/Sale.java
	webcash-domain/src/main/java/com/siriusif/model/Suborder.java