Fix $http AJAX request timing issue #34
                
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Making an $http (AJAX) request is giving timing issues, the bootstrap-select does not get refresh properly (or too early) and end up like an empty list because of timing issues.
See the Issue #33 : #33
Also the StackOverflow question and answer : http://stackoverflow.com/questions/28336106/angular-bootstrap-select-timing-issue-to-refresh/28376105#28376105