Reactions with reactonts, products and modifiers
lists are now visible in /model/[modelmetaid]
Reactants, products and modifiers added to the UI.
Changes:
 - wm_prototype has an example of model visualization.
 - several other bugs fixes
Accordion bug corrected and general cleanup.
The accordion was corrected by Luis de Matos.
CSS embelishments by Luis de Matos (luismatosdesign et gmail dot com).
Reactant.species record field partially implemented.