QuickFixes: Sort by priority.
* Generally changes the BasicProposalItemListModel's sort to take the BasicProposalItem::order member into account. * Currently only the QML completion and quick fixes set the order. * This means the 'Apply signature changes' quick fix is now further up than the 'add definition' quick fix. Change-Id: I7b5bc82aa37fca232fddd630ab3273437e1bcc09 Reviewed-by: Leandro Melo <email@example.com>