style(angulartics-ga.js): Use the registerPageTrack style of checking for both `_gaq` and `ga`
style(angulartics-ga.js): Use the registerPageTrack style of checking for both `_gaq` and `ga`

Ignigena/angulartics,abhilashsajeev/angulartics,iamakimmer/angulartics,angulartics/angulartics,indiegogo/angulartics,cristoferdomingues/angulartics,mushkab/angulartics,aheuermann/angulartics,dy2288/angulartics,geordie--/angulartics,marcin-wosinek/angulartics,cwill747/angulartics,WoodWing/angulartics,martijndejongh/angulartics,trolleycrash/angulartics,jung01080/angulartics,TallyFox/angulartics