Update to bower 1.3.8 to fix travis builds
Update to bower 1.3.8 to fix travis builds

fbaumgardt/arethusa,Masoumeh/arethusa,alpheios-project/arethusa,PonteIneptique/arethusa,latin-language-toolkit/arethusa,alpheios-project/arethusa,alpheios-project/arethusa,PonteIneptique/arethusa,fbaumgardt/arethusa,fbaumgardt/arethusa,Masoumeh/arethusa,latin-language-toolkit/arethusa