[fix] PropertyTest and YamlTest in common (The test fails when the folder "src\test\resources" not exists)
[fix] nullPointer in Properties.getString(propertyPath, defaultValue) when defaultValue is null
[add] new ConnectionsProperties class to dataservice
[add] Same checker to common
[update] implement the new ConnectionProperties
[update] unifies the maxDepth an maxSize key in the config files an in json
remove unused classes