[manual testcase] Added manual test for issue #72
Fix showDevTools argument handling for dev jail

the bug is: clicking the gears button doesn't clear the
cached jail target
Merge pull request #1040 from alex-ter/nw-manual-test-#72

[manual testcase] Added manual test for issue #72
bump version to 0.7.3-pre
[test] Update user-agent test case to cover reload and child window.
Merge pull request #1066 from kingFighter/tests

[test] Update user-agent test case to cover reload and child window.