But fixes in Plots tab of Dashboard

• When a Test Type Name was not provided, it was still calling a wrong REST API end (Test...). In such case, it was supposed to grab only info of each Items, not Test's. Fixed.
• In 2D scatter mode, when variable on the Y-axis was alphanumeric, it was still treating as numeric. Has been also fixed.
• Not a bug. But the "threshold" box in the Condition has been widen so that a longer variable, such as a PID, can be visible.