temporary commit 0228
fix sqlbuilder section and go to GearsPage and Mediator
add comments and set namespace
modify almost finished
api almost fixed
rename method names
fix addRelation
add gears mediator test
fix databind
pass all SqlBuilder test
add test for execute to SqlBuilderTest
confirm control , dto , sql in GearsMediator
add basic save test
fix datasource execute
change db access way
pass all test
add delete of file
fix , mainly for nothing
add testcase for confirmed bug
adjust method name