In fitting fixed issues with the disable baseline option only really working for newton, more to do on VB. Enabled voigt fitting again for VB. IN fsl_mrs changed default fitting to voigt, gave added MM some width to start with.

Modification to allow quantification without tissue fractions. Not happy with this quantification package yet but it will do.

Removed unnecessary argument from create report. Fixed issue with runing combine metabs multiple times. Updated example notebook.

Changes committed on morning of review. Warning might need to sort out the plotting code after messing around in dash.