Adjust minimum value warnings for line width
Adjust minimum value warnings for line width

This was discussed with Tom from materials. The minimum warning value is now a linear function with a y-intercept. I tuned it so that it just sails under the minimum values of all of our profiles.

fieldOfView/Cura,hmflash/Cura,ynotstartups/Wanhao,ynotstartups/Wanhao,Curahelper/Cura,Curahelper/Cura,hmflash/Cura,fieldOfView/Cura