ENYO-3704: Fix content switch on tab removal and menu tap


This PR is also necessary to fix ENYO-3798

* ENYO-3704: Fix tab selection when done with the tabbar menu on the right 
* ENYO-3704: fix event parameter sent during tab switch...
* ENYO-3704: Fix delayed tabbar sample to handle tab changes done on tab removal
* ENYO-3704: Fix parameters of doTabChanged event that is fired on tab removal
* ENYO-3704: fix typo in doc

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-3704
Related JIRA: https://enyojs.atlassian.net/browse/ENYO-3798

Enyo-DCO-1.1-Signed-off-by: Dominique Dumont <dominique.dumont@hp.com>