Merge remote-tracking branch 'upstream/master' into tom/prefs-id-cleanup-2
Improved getClientID and getPreferenceStorage
Check errors before adjusting timeout.
Fixes after third review
Fixes after review
Merge pull request #3121 from TomMalbran/tom/line-comment-prefixes

Adding support for multiple lineComment prefixes
czech translation - sprint 21

updated new strings
only check domain of root frame
update tks
Don't return false when getting close window command from native shell. Otherwise, users will lose changes in the unsaved documents.
update line 112,117and118
update some error!
update
love!
Using getExtensionPaths and updated handleClientIdChange
Merge pull request #3141 from adobe/randy/live-dev-nav

If live dev page leaves site, then terminate live dev
Refactor some common code into a function.
turning test back on in the integration category
Merge branch 'master' into iwehrman/live-development-startup-refactoring

Conflicts:
	src/LiveDevelopment/LiveDevelopment.js
Update README.md

Update list of supported languages as of sprint 21