Rename :
  -  DataModel -> RequirementSourceData
  -  Contained -> AbstractElement
  -  Requirement -> SimpleRequirement
  -  RequirementSection -> Requirement
Rename - RequirementSourcesConf -> RequirementSourceConf
Rename :
 - ElementMapping -> MappingElement
 - AttributeMapping -> MappingAttribute
Add custom get Text for MappingAttributeItemProvider.java and MappingElementItemProvider.java
- Move Scope : from RequirementSourceData -> to ScopesConf.ecore
rename : ScopesConf -> ScopeConf
move RequiementSource element from RequirementSourceData.ecore -> to RequirementSourceConf.ecore
add method to save a collection of EObject
getConfiguration from ziggurat/configuration/IConfigurationManager.java returns a collection of EObject
Remove Analysis Scope
Inject the class in the constructor instead of using ZigguratInject.make()
Use DataModelManager to retrieve Scopes
Replace the containment link between Requirement sources and Abstract Elements by a reference one
Add String attribute to Scope for Data Model URI
Remove Requirements file when removing a requirement source
change visibility of getConfigurationURI to public
Add container element, Requirements Container, in RequirementSourceData meta model
rebuild update sites
rebuilt update site (missed files)
Merge remote-tracking branch 'remotes/origin/develop' into develop_DataModel