Remove duplicated bower 'main' entry
Remove duplicated bower 'main' entry

Closes gh-522

dulichan/kart-slide,henrikingo/impress.js,arkegeomatica/presentaciones,impress/impress.js,j2lb/Algo_Impress.js,henrikingo/impress.js,dulichan/kart-slide,impress/impress.js,j2lb/Algo_Impress.js,arkegeomatica/presentaciones,RonFIX/internet,RonFIX/internet