Revise the database schema to a simpler model. Note that this model is almost the same as the version commited on April 23, 2015 (dacfa38da3a35e927e96374c716e0f422922950a). This revision reverts the model back to this version while keeping other newer revisions.
Revise the database schema to a simpler model. Note that this model is almost the same as the version commited on April 23, 2015 (dacfa38da3a35e927e96374c716e0f422922950a). This revision reverts the model back to this version while keeping other newer revisions.

wangchj/countup,wangchj/countup