Two factor authentication on front-end

When two factor authentication is enabled and in all plugins it is set to use it only in back-end then in front-end secret key field should be hidden in users component as in login module.
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_id=8103&tracker_item_id=33153
Update view.html.php
Merge pull request #2801 from piotrmocko/patch-10

Two factor authentication on front-end
[cs] [33624] Expression is not assignable: Infix expression
Close #3465
[bug] [33314] Fix Undefined variable: $originalOrders in com_tags
Close #3150
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