Implement SPADB
Payloads: add a name attributes to SPASPec
SPA: refactor the use of the presenceRequest API
Worker: add an SPADB to the TKWorker
Sidebar: setup the user nick from the worker
Persist and load the SPA setup from an SPADB
Worker: drop the SPADB when signing out
Fix tests
Remove spadb.js from the homepage
Fix a few port calls
Tests: extend the test coverage to spadb.js
SPADB: remove any reference to ContactsDB
Clear any pending long polling requests when a client reconnects
Merge branch 'master' into fix-signin-regression

Conflicts:
	static/js/worker.js
	static/js/worker/spa.js
	test/frontend/worker/handlers_test.js
Merge branch 'master' into fix-signin-regression

Conflicts:
	static/js/sidebar/app.js
	test/frontend/sidebar/sidebarapp_test.js
Fix tests
Merge pull request #325 from tOkeshu/fix-signin-regression

Fix signin regression