Fix a bug found during adding acceptance tests
Add users for acceptance tests
Start adding scenario-1 acceptance test of sprint#2
Change character encoding from cp932 to utf-8
Add test:acceptance task to separate acceptance tests from integration tests
Refine structure of acceptance tests
Correct to run acceptance tests on windows
Add screen capture steps in order to save test evidences
Add checkpoints of screen-caps
Wrap #save_screenshot in order not to abend in rack_test mode
Fix a problem that the new engine does not appear in the engine-order form after the engine is reserved to ship
Complete scenario-1 acceptance test of sprint#2
Merge branch 'yanoh-add_test-scenario1' into develop