The app stopped working after upgrading to chrome 50.0.x

[Tomasz Garbowski]

After upgrading to chrome 50.0.2661.75 the app stopped working.

Tested on Linux Mint 17.3 (Ubuntu 14.04 LTS), tracker version 0.7.13.

The saved configuration does not get loaded and the tracker does not connect to its redmine instance. The console log:

Failed to load resource: net::ERR_FILE_NOT_FOUND
window.localStorage is not available in packaged apps. Use chrome.storage.local instead.
Object
history.pushState is not available in packaged apps.
TypeError: Object.observe is not a function
    at new e (script.js:2)
    at Object.<anonymous> (script.js:2)
    at Object.d [as invoke] (angular.min.js:35)
    at angular.min.js:36
    at c (angular.min.js:34)
    at Object.d [as invoke] (angular.min.js:35)
    at angular.min.js:36
    at c (angular.min.js:34)
    at d (angular.min.js:35)
    at Object.instantiate (angular.min.js:35)