Update bower.json to include angular-datepicker
Update bower.json to include angular-datepicker

https://github.com/g00fy-/angular-datepicker
4bic-attic/grano-ui,CodeForAfrica/grano-ui,4bic-attic/grano-ui,CodeForAfrica/grano-ui,granoproject/grano-ui,CodeForAfrica/grano-ui,4bic-attic/grano-ui,granoproject/grano-ui