default some columns to empty strings
default some columns to empty strings

pearlshin/StoryVine,mxngyn/StoryVine,pearlshin/StoryVine,SputterPuttRedux/storyvine_clone,mxngyn/StoryVine,mxngyn/StoryVine,pearlshin/StoryVine,SputterPuttRedux/storyvine_clone,SputterPuttRedux/storyvine_clone