Bugfix--solver type combobox value incorrectly saved.
It seems that the setSolverType method is for setting the "solver type" button group on the align tab. It is not for setting the solving method inside of opsalign.ui. However, that solving method inside of opsalign is confusingly named kcfg_SolverType, so it sounds like it is related to the setSolverType method--but it isn't.
Calling Options::setSolverType(..) sets the combo box. The setSolverTYpe method shouldn't be setting that combo box's Options value. This MR corrects that. [Perhaps it should be setting the button group's menu?]