Labeling Issue when Decomposing Spectrum

[mgiammar]

Steps to reproduce.

1. From examples page, load Wollastonite
2. Select the decompose spectrum button

Expected behavior: The spectrum decomposes into experiment, Q2 (3), Q2 (1), Q2 (2), and residual

Observed behavior: The spectrum decomposes into experiment, Q2 (3), Q2 (1), Q2 (2), and NMR Spectrum

NMR Spectrum is mislabeled on the graph legend

[mgiammar]

Additionally, if the spectrum starts decomposed then the decompose button needs to be pressed twice to bring the spectrum back to experiment, simulation and residual