took Degradation, Molecule and Product classes out of Reaction file
#163 partially refactored loading of ActiveTransport
removed references to Pierre Collet, who doesn't work on the project anymore
#163 removed ActiveTransportLoader; extracted ActiveTransportProperties from ActiveTransport
work on Medium.addReaction; fixed typos
#163 refactoring Fick loading (WIP)
fixed crash when logging Mediums
#163 finished refactor of Fick loading
#163 refactored medium loading + typos
#163 got rid of initFromLoad
#163 created CompoundLoadableFromXmlImpl for loadable, compound classes, and used it to refactor MoleculeSet
removed useless error log calls