spectral-workbench.js JS/Rails integration (Public Lab)

This project focuses on the improvement of the live capture section implemented in the spectral workbench app at https://spectralworkbench.org/capture/ to make use of the spectral-workbench.js library after adding some enhancements to it. Additionally, this would require the new live capture code to be adapted to interface with the rails server in order to fetch recent spectral calibrations, display them in a dropdown, then make use of the chosen calibration spectrum to display a scaled x-axis on the live capture interface graph before finally handing off the calibrated data to the rails app.