Extended parameters in Config Description schema

Signed-off-by: Alex Tugarev <telekom@tugarev.de>
Merge pull request #122 from qivicon/config-description-extension

Extended parameters in Config Description schema
#454938: Fixed interpretation and creation of default values in ThingFactory.
Adapted hue binding to use BigDecimal as type and removed default values from handler (already specified in xml).

Signed-off-by: Dennis Nobel <d.nobel@external.telekom.de>
Merge pull request #124 from qivicon/bug-454938

#454938: Fixed interpretation and creation of default values in ThingFac...