Improve calculation of full form action URL
Improve calculation of full form action URL

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