Reorder tabs to flow from left to right, top to bottom

[bparks13]

To make it easier to follow the flow of logic, when pressing tab, it now follows a logical flow from left-to-right, and top-to-bottom. This is true for all existing dialogs, and this pattern should be followed for all future dialogs added.

Rhs2116

Neuropixels V1

Neuropixels V2

Fixes #290

[jonnew]

Works well. The only thing I noticed is that if i keep pressing tab and reach the last editable element, the selection does not "loop" back to whatever the default first selection is. Is it possible to do this?

[jonnew]

FYI, the GUI that @cjsha created for the spatial transform has the correct, looped tab behavior if you need a reference : #477

[bparks13]

Rhs2116StimulusSequenceDialog now correctly loops from the last control to the first one. Due to WinForms default tabbing behavior, this form needs a tab handler to close the loop, otherwise the focus could go to the ChannelConfigurationDialog and get stuck there.

[jonnew]

Works well.