Add indices that will speed up common query scenarios
Add indices that will speed up common query scenarios

See issue #225

mehrtash/CTK,151706061/CTK,CJGoch/CTK,danielknorr/CTK,espakm/CTK,Heather/CTK,fedorov/CTK,CJGoch/CTK,naucoin/CTK,CJGoch/CTK,vovythevov/CTK,jcfr/CTK,vovythevov/CTK,finetjul/CTK,SINTEFMedtek/CTK,laurennlam/CTK,Heather/CTK,naucoin/CTK,fedorov/CTK,espakm/CTK,sankhesh/CTK,SINTEFMedtek/CTK,SINTEFMedtek/CTK,laurennlam/CTK,finetjul/CTK,rkhlebnikov/CTK,pieper/CTK,espakm/CTK,pieper/CTK,AndreasFetzer/CTK,laurennlam/CTK,SINTEFMedtek/CTK,danielknorr/CTK,naucoin/CTK,Sardge/CTK,commontk/CTK,Sardge/CTK,commontk/CTK,msmolens/CTK,151706061/CTK,Heather/CTK,danielknorr/CTK,151706061/CTK,ddao/CTK,finetjul/CTK,Sardge/CTK,sankhesh/CTK,jcfr/CTK,sankhesh/CTK,msmolens/CTK,rkhlebnikov/CTK,espakm/CTK,fedorov/CTK,AndreasFetzer/CTK,151706061/CTK,danielknorr/CTK,laurennlam/CTK,finetjul/CTK,mehrtash/CTK,AndreasFetzer/CTK,vovythevov/CTK,pieper/CTK,mehrtash/CTK,vovythevov/CTK,jcfr/CTK,mehrtash/CTK,jcfr/CTK,ddao/CTK,rkhlebnikov/CTK,SINTEFMedtek/CTK,ddao/CTK,rkhlebnikov/CTK,Heather/CTK,msmolens/CTK,Sardge/CTK,naucoin/CTK,jcfr/CTK,ddao/CTK,AndreasFetzer/CTK,151706061/CTK,fedorov/CTK,commontk/CTK,CJGoch/CTK,pieper/CTK,CJGoch/CTK,commontk/CTK,msmolens/CTK,sankhesh/CTK