Merge pull request #308 from forumbyr/master

install - add create db command; init schema and data; extract connection pool size to propertity file
add logger and comment for dao impl
Merge pull request #309 from forumbyr/master

add sql log,open it if necessary.
Merge pull request #310 from warmdawn/dev

add logger and comment for dao impl
split sql init file to two files: init schema & base data , and test
data
Merge remote-tracking branch 'cnnic/dev'