[TRAVIS] Prevent caching entire site, only gen. images
[TRAVIS] Prevent caching entire site, only gen. images

johnathan99j/history-project,newtheatre/history-project,johnathan99j/history-project,johnathan99j/history-project,newtheatre/history-project,newtheatre/history-project,johnathan99j/history-project,newtheatre/history-project,johnathan99j/history-project,newtheatre/history-project