- fix for bug 1973: do not require a metabolite for layout glyphs (they are not guaranteed to have one in SBML)
- fix saving of models when compiling without the hybrid ode 45
- bug 1973: always write the metabolite attribute for metaboliteGlyph, even when it is not referenced. that way older versions of COPASI won't refuse to load the model
- fix icon to 48x48 version: this icon is displayed on windows in the task bar
- fix for Bug 1972: display of negative flux modes. Now they will be highlighted as well
- fix for bug 1971: when creating a new layout, mark substrates in reversible reactions as product as well
added accessor to ComboDelegate map of combo items lists
undid non-robust implemenation of CQComboDelegate::getItems