Thermometer_Power_Switch_x3 and DC jack mount

Update 15 feb 2018
Somehow I didnt upload the correct stl file for the power switch, not its the correct version


Made some changes for the very nice design (2012384) for a printer enclosure using 2 Ikea Lack tablees

- Created a DC jack mount
- Created a 3 button version for the Thermometer_Power_Switch_Box, so I can also control the air filter