https://www.youtube.com/watch?v=PwWRqf7a_uA&list=PLqL-uCNdScf9wnt4YUKK5cTVpjb-qicVW
https://docs.angularjs.org/api
http://www.w3schools.com/angular/angular_ref_directives.asp
http://www.w3schools.com/angular/default.asp
https://docs.angularjs.org/guide
http://stackoverflow.com/questions/11699635/dealing-with-dom-manipulations-angularjs
http://blog.xebia.com/promises-and-design-patterns-in-angularjs/
https://www.bennadel.com/blog/2777-monitoring-http-activity-with-http-interceptors-in-angularjs.htm
ahttp://viralpatel.net/blogs/angularjs-service-factory-tutorial/
https://code.ciphertrick.com/2015/06/01/search-sort-and-pagination-ngrepeat-angularjs/
https://www.bennadel.com/blog/2456-grouping-nested-ngrepeat-lists-in-angularjs.htm
http://blog.thoughtram.io/angularjs/2015/01/14/exploring-angular-1.3-speed-up-with-applyAsync.html
https://github.com/jonsamwell/angular-http-batcher
https://scotch.io/tutorials/sort-and-filter-a-table-using-angular
https://docs.angularjs.org/guide/unit-testing
http://angular-ui.github.io/ui-calendar/
https://material.angularjs.org/latest/
https://material.angularjs.org/latest/demo/progressLinear
https://material.angularjs.org/latest/demo/select
https://docs.angularjs.org/api/ng/service/$cacheFactory
http://victorbjelkholm.github.io/ngProgress/#demo
https://www.phase2technology.com/blog/caching-json-arrays-using-cachefactory-in-angularjs-1-2-x/
https://jsfiddle.net/jeremylikness/wMF4x/
https://stackoverflow.com/questions/18310007/add-html-link-in-anyone-of-ng-grid
http://connor-johnson.com/2015/05/25/open-a-text-file-with-angular/
https://stackoverflow.com/questions/47345282/how-to-add-cors-request-in-header-in-angular-5