handle xmpp logout in uproxy
change comment
add notification
UI bug fixes.

- change popup title
- refresh popup url instead of closing and reopening the popup
-
Remove variable duplicate.
Fix app missing page flakiness.
Move updatePopupUrl to ChromeBrowserApi.
Remove extra space.
Merge pull request #714 from uProxy/lucyhe-update_popup_url

UI bug fixes.
Merge pull request #643 from uProxy/salomegeo-generic-core

handle xmpp logout in uproxy
Merge pull request #712 from uProxy/firefox-contacts

firefox login
remove auth.ts