Final implementation of ChiralEFT4DM and clean-up

The plots have now labels on their axis
mgeosm2observables has been re-re-renamed back to pydmanalyzer
Using scipys hyp1f1 instead of mpmath hyp1f1 in dmformfactor
Modified dmformfactors get_ff_final to be quicker
Modified dmformfactor to use the same conversion constant for the
dm_density as the original software
Restructured the backend of the webapp so numerical results can be
calculated with chiraleft4dm