Fix/biomass composition

[BenjaSanchez]

Main improvements in this PR:

• redefined biomass composition to fix previous bug that underestimated the biomass content (previously water was included in polymers, i.e. was adding to less than 1 g/gDW).
• added folder ComplementaryData/physiology for biological data of yeast (biomass composition, chemostat data and the like)
• fitted GAM to chemostat data

Current composition for the model, according to sumBioMass.m, is now:

protein      -> 0.46 g/gDW
carbohydrate -> 0.3857 g/gDW
RNA          -> 0.061 g/gDW
DNA          -> 0.0037021 g/gDW
lipid        -> 0.087299 g/gDW
other        -> 0.0022946 g/gDW
total        -> 1 gDW/gDW
Growth = 0.087907 1/h
GAM    = 55.4 mmol/gDWh

I hereby confirm that I have:

• Tested my code with all requirements for running the model
• Selected devel as a target branch (top left drop-down menu)
• If needed, asked first in the Gitter chat room about this PR

[feiranl]

Great!

[feiranl]

May I start a new branch to add more biomass components or just add them in this branch?

[BenjaSanchez]

@feiranl as this is a fixing branch and you intend to introduce new things (i.e. a feature branch), the proper thing to do is to work on a separate branch. Will merge this one tomorrow.