Rename files for application missing error.
Other small bugs.

- focus on app webstore tab after it opens
- open popup when extension is first installed
Updated chrome.app typings.

Added chrome.app.window.get and
chrome.runtime.onLaunched.removeListener.
Add a TODO to check for race condition.
Merge with dev
Update index.html to use ui_enums

Also, activate the auth page when it opens.
Merge pull request #695 from uProxy/lucyhe-fix_install_bugs

Fix install flow bugs.