You’re doing an include of header.url instead of header.html. It looks like you want to use literals in the src attribute, so you should wrap them in quotes, as was mentioned in the comments by @DRiFTy.
Change
<div ng-include src="https://stackoverflow.com/questions/22991658/partials/structure/header.url"></div>
<div ng-include src="partials/structure/navigation.url"></div>
<div id="view" ng-view></div>
<div ng-include src="partials/structure/footer.url"></div>
to
<div ng-include src="'partials/structure/header.html'"></div>
<div ng-include src="'partials/structure/navigation.html'"></div>
<div id="view" ng-view></div>
<div ng-include src="'partials/structure/footer.html'"></div>
If this is not working, check the browser console if there are any 404’s