Remove deprecated attributes from REST API

[RetGal]

In ch.mobi.itc.mobiliar.rest.dtos.ResourceRelationDTO the new property relationName will replace the property identifier. The property identifier will be removed by v1.14. The following REST URIs are concerned:

• /resources
• /resources/{resourceGroupName}/{releaseName}
• /resources/{resourceGroupName}/lte/{releaseName}
• /resources/{resourceGroupName}/{releaseName}/relations
• /resources/{resourceGroupName}
• /resources/resourceGroups/{resourceGroupId}/releases/mostRelevant/
• /resources/resourceGroups/{resourceGroupId}/releases/
• /resources/resourceGroups/{resourceGroupId}/releases/{releaseId}

appsWithMvnVersion in the ch.mobi.itc.mobiliar.rest.dtos.DeploymentDTO is depricated and will be removed in v1.14. It was replaced with appsWithVersion in v1.12. This change concerns all /deployment REST URIs.