mysql db script & image download & upload & resource
download & upload location. can be configurable.
sdk download sys location
add index & foreign key to db tables.
add a session time out.
add the resource cache time.
correct the mysql statement.
1, ##
sql use status for applications table.
use dev & prod to active diffierent profile.
there is problem when useing mysql for date format.
solve the funny time format for mysql. 
need to set dataset & a lot other to communicate with mysql.
add cache & moniter
change profile to dev