add test file & Column service
add service to testing
refactor unit test
add setValue & getValue @ Column
test setValue @ Column
add jshint & jsformatter & add getValue @ Column service
add getValues @ Column service
refactor setValue @ Column service
add multiversioning @ Column service
return null if not find timestamp properly
add Family service
fix can't instantiate Family service issue
add family unit test
add about family @ Row services
add Column & Family finder
add family & refine layout @ create row dialog
add fieldset @ create row dialog
refine layout
add row method
add Value Service