override specific templates in AngularUI Bootstrap?

http://www.ngroutes.com/questions/1adab29/angular-ui-bootstrap-datepicker-add-custom-function-to-template.html
http://www.codeproject.com/Tips/803247/Datepicker-directive-using-AngularJS-and-Bootstrap

http://stackoverflow.com/questions/17660947/can-you-override-specific-templates-in-angularui-bootstrap
https://github.com/angular-ui/bootstrap/blob/gh-pages/ui-bootstrap-tpls-0.4.0.js#L2938

http://jsfiddle.net/the_menace/ddvg5wg1/

http://stackoverflow.com/questions/26749027/how-to-override-angular-ui-bootstrap-datepicker

http://plnkr.co/edit/YLJW2imcDAbzwsvp58Rl?p=info