Fix function reference errors reported by JSLint for slick.grid.js
Fix function reference errors reported by JSLint for slick.grid.js

matrix1992/SlickGrid,iCoreSolutions/SlickGrid,csgsolutions/SlickGrid,K2InformaticsGmbH/SlickGrid,dandy/SlickGrid,manju-reddys/SlickGrid,zartata/SlickGrid,coatue/SlickGrid,csgsolutions/SlickGrid,Celebio/SlickGrid,6pac/SlickGrid,coatue/SlickGrid,nagasudhirpulla/SlickGrid,concord-consortium/codap-SlickGrid,helin16/SlickGrid,Revionics/SlickGrid,lgsunnyvale/eFinancialModel,TedDBarr/SlickGrid,RobertoMalatesta/SlickGrid,jesenko/SlickGrid,chrisghost/X-SlickGrid,ddomingues/X-SlickGrid,benjaminRomano/bd-SlickGrid,songyaos/SlickGrid,lanwan/SlickGrid,gofflab/neuron-seq-site,gofflab/neuron-seq-site,trazyn/SlickGrid-mini,ekohe/SlickGrid,steelsojka/SlickGrid,pandell/SlickGrid,dbirchak/SlickGrid,coatue-oss/slickgrid2,pirasis-l/SlickGrid,ddomingues/X-SlickGrid,andrewchilds/SlickGrid,vinicius5581/SlickGrid,Medisapiens/SlickGrid,varunkumar/slickgrid-mleibman,gofflab/neuron-seq-site,RobertoMalatesta/SlickGrid,doctor41/SlickGrid,msuchoi/Coffee,werture07/SlickGrid,FactLook/SlickGrid,GerHobbelt/SlickGrid,benjaminRomano/bd-SlickGrid,cheminfo/SlickGrid,mleibman/SlickGrid,JonBons/SlickGrid-DraggableGrouping-SummaryFooters,songyaos/SlickGrid,ceanota/SlickGrid,fortesl/SlickGrid,redabakr/SlickGrid,iCoreSolutions/SlickGrid,peaceboy/SlickGrid,thationothe/SlickGrid,matrix1992/SlickGrid,TedDBarr/SlickGrid,chrisghost/X-SlickGrid,priyaaanand/SlickGrid,msuchoi/Coffee,dynamicaction/SlickGrid,jiangzhixiao/SlickGrid,Infowatch/SlickGrid,tradingtechnologies/SlickGrid,priyaaanand/SlickGrid,lanwan/SlickGrid,GerHobbelt/SlickGrid,ceanota/SlickGrid,andrewchilds/SlickGrid,manju-reddys/SlickGrid,cjsigler/SGrid,werture07/SlickGrid,JLynch7/SlickGrid,cheminfo/SlickGrid,cheminfo/SlickGrid,Termato/SlickGrid,yamass/SlickGrid,jiangzhixiao/SlickGrid,pandell/SlickGrid,dbirchak/SlickGrid,vinicius5581/SlickGrid,doctor41/SlickGrid,redabakr/SlickGrid,ekohe/SlickGrid,msuchoi/Coffee,thationothe/SlickGrid,gofflab/neuron-seq-site,zamabraga/SlickGrid,zartata/SlickGrid,nagasudhirpulla/SlickGrid,sonatype/SlickGrid,andrewchilds/SlickGrid,mtscout6/SlickGrid,msuchoi/Coffee,Infowatch/SlickGrid,yamass/SlickGrid,fortesl/SlickGrid,codexp/SlickGrid,dandy/SlickGrid,mindmatters/SlickGrid,SimplGy/SlickGrid,helin16/SlickGrid,FactLook/SlickGrid,coatue/SlickGrid,sonatype/SlickGrid,Termato/SlickGrid,trazyn/SlickGrid-mini,dynamicaction/SlickGrid,zamabraga/SlickGrid,tradingtechnologies/SlickGrid,GerHobbelt/SlickGrid,gbark/SlickGrid,jesenko/SlickGrid,codexp/SlickGrid,6pac/SlickGrid,peaceboy/SlickGrid,coatue-oss/slickgrid2,mleibman/SlickGrid,SimplGy/SlickGrid,Revionics/SlickGrid,steelsojka/SlickGrid,mindmatters/SlickGrid,mtscout6/SlickGrid