Endo and exo cycloadditions, reference reaction has 1D HR
Rates endo and exo updated.
Merge branch 'aaron' of https://github.com/agvandeputte/RMG-Java into jp10
Added kekulize function to dearomatize molecules in input and rxn libraries.

Has not been implemented for thermo libraries but we may want to
add it for people who haven't converted their thermo libraries as well.