This fixes an incorrect mapping for the GE 45606 dimmer as well as fills out the rest of its supported command classes.  This also adds support for Leviton VRI06-1LZ dimmers that have a slightly different product ID (like mine).
Fixed duplicate entry for leviton in products, cleaned up incorrect GE/Jasco Dimmer xml
Merge pull request #1418 from digitaldan/dimmer-updates

[Z-Wave] Dimmer updates
add optional headers functionality to http binding cache items in the
main configuration file.
removed unnecessary imports

Signed-off-by: Kai Kreuzer <kai@openhab.org> (github: @kaikreuzer)