started issue #11 xml loading error treatment (cf #163 too)
issue #11 xml loading error treatment (cf #163 too) - finished InstantReaction
issue #11 xml loading error treatment (cf #163 too) - other IReaction
issue #11 xml loading error treatment (cf #163 too) - FickProperties
issue #11 xml loading error treatment (cf #163 too) - ActiveTransportProperties
issue #11 xml loading error treatment (cf #163 too) - Medium
issue #11 xml loading error treatment (cf #163 too) - Molecule + fixes
issue #11 xml loading error treatment (cf #163 too) - Allostery
issue #11 xml loading error treatment (cf #163 too) - introducing method hasValidData for reactions; fixed PartialEquals - formerly known as CharacEquals; fixed typos
issue #11 xml loading error treatment (cf #163 too) - implemented method hasValidData for reactions