Consider converting text boxes to NumericUpDown editors

[bparks13]

Specifically in Rhs2116StimulusSequenceDialog, consider changing all editors from text boxes to NumericUpDown editors. This allows logic to be embedded in the editor to define minimum and maximum values, and also could allow for easier adjusting.

For time-based properties, the ticks can be based on some discrete number of samples per tick (i.e., one sample is ~33 ms, so one tick could be set to 3 samples, which would be ~100 ms). This can also be updated dynamically if the scale is on the order of tens of seconds.

For amplitude-based properties, the ticks can be based on the current step size, and each tick is one sample of the current step size.