Prepare for multiple monitor instances

Allow specifying monitors with name labels so multiple instances of a
monitor using different database names can be used.

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Add RDing TEMPer1V1 support

Add monitor for RDing TEMPer1V1 temperature sensor data. Temperatures
read from sensor may be innacurate and need proper calibration.

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>