Added missing QTimer include
Added missing QTimer include

Change-Id: I4eb28a53fc1105e522fcad03b928605867c4b0b6

ghutchis/avogadroapp,wadejong/avogadroapp,OpenChemistry/avogadroapp,ghutchis/avogadroapp,OpenChemistry/avogadroapp,OpenChemistry/avogadroapp,wadejong/avogadroapp,ghutchis/avogadroapp,wadejong/avogadroapp,OpenChemistry/avogadroapp,ghutchis/avogadroapp