Add copyright notice and update javadoc

src/main/java/org/openepics/names/NamingApplication.java

...s/names/rest/beans/element/NameElementCommandConfirm.java

...cs/names/rest/beans/element/NameElementCommandCreate.java

...cs/names/rest/beans/element/NameElementCommandUpdate.java

...es/rest/beans/element/StructureElementCommandConfirm.java

...mes/rest/beans/element/StructureElementCommandCreate.java

...mes/rest/beans/element/StructureElementCommandUpdate.java

...ava/org/openepics/names/util/ValidateNameElementUtil.java

...rg/openepics/names/util/ValidateStructureElementUtil.java

...test/java/org/openepics/names/NamingApplicationTests.java

...ava/org/openepics/names/util/EssNamingConventionTest.java