fix live preview reload for documentSaved events
#5222 do not reload HTML files if instrumented
Merge branch 'master' into jasonsanjose/issue-5185
code review comments
copy live dev test files to temp dir. code review comments. add unit test for saving JS files.
code review @gruehle. wait for Inspector.Page.loadEventFired for FILE_SAVE test cases.
fix missing timeouts
Merge pull request #5207 from adobe/jasonsanjose/issue-5185

Fix live preview reload for documentSaved events