rowForView returns -1 not NSNotFound when it can't find a row for a given view.  Make explicit the check on viewAtRow returned right class or not, since group rows aren't the same (group rows shouldn't be returned, but just in case)
rowForView returns -1 not NSNotFound when it can't find a row for a given view.  Make explicit the check on viewAtRow returned right class or not, since group rows aren't the same (group rows shouldn't be returned, but just in case)

doshinirav/doshinirav-myversion,CarlosCD/growl,coltonfisher/coltonfisher-growl,CarlosCD/growl,CarlosCD/growl,doshinirav/doshinirav-myversion,coltonfisher/coltonfisher-growl,doshinirav/doshinirav-myversion,doshinirav/doshinirav-myversion,coltonfisher/coltonfisher-growl,CarlosCD/growl,CarlosCD/growl,CarlosCD/growl,coltonfisher/coltonfisher-growl,doshinirav/doshinirav-myversion,doshinirav/doshinirav-myversion,doshinirav/doshinirav-myversion,CarlosCD/growl,coltonfisher/coltonfisher-growl,coltonfisher/coltonfisher-growl,coltonfisher/coltonfisher-growl