Complete import into orion with 'Import local file...' on kuckuck.

All snippets were exported to download location C:\GoogleChromeSnippets using snippet devtools_import_export.js, then drop onto orion's "import a file or zip" popup.
File input dialog does not support multiple files!
Format JS
Run UI in new tab, both for webpage and devtools localStorage import/export.

Need to open window from callback to open new tab instead of window.
Add backward compatibility for snippet import in Google Chrome 30 where createFile only takes three arguments.
Integrate latest functionality of collect_command_history.js

Drop window.open strWindowFeatures argument to open in tabs instead of popups, still via anchor click listeners.
Format JS

Comparing Format JS changes is still difficult without ignore whitespace support.
move devtools_import_export.js
delete all snippets, import snippets from localStorage download.

Dynamically updating localStorage and snippet counts.
Tested only in chrome canary.
Make user confirm successful localStorage download in delete all snippets.
Deleting all snippets works in Chrome 30 now as well.

Improve presentation of alert information for the two use cases:
To inspect localStorage
To import/export devtools source snippets
Add header comment hopefully sufficient for adept users