Fix skip task generator bug
Fix skip task generator bug

--HG--
branch : ng2

SpaceAppsXploration/grab,subeax/grab,raybuhr/grab,pombredanne/grab-1,SpaceAppsXploration/grab,alihalabyah/grab,raybuhr/grab,pombredanne/grab-1,shaunstanislaus/grab,maurobaraldi/grab,maurobaraldi/grab,huiyi1990/grab,shaunstanislaus/grab,kevinlondon/grab,istinspring/grab,DDShadoww/grab,lorien/grab,alihalabyah/grab,giserh/grab,DDShadoww/grab,codevlabs/grab,liorvh/grab,huiyi1990/grab,giserh/grab,istinspring/grab,codevlabs/grab,liorvh/grab,subeax/grab,kevinlondon/grab,lorien/grab,subeax/grab