New menu option to go back to ConfigurationWizard.

It works ok (it simply starts ConfigurationWizard activity for result),
but when entering again to Dashboard a NullPointer happens in
serviceItemEIP(((ViewStub)
findViewById(R.id.eipOverviewStub)).inflate();).

It also adds (I forgot to commit before leaving the retry-login branch)
ProgressDialogs to login and logout operations.