chore: update to angular 1.3

Closes #257
fix(securityInterceptor): return responseError rejection if not handling

As per https://github.com/angular/angular.js/issues/2609, $http requests
always execute their success handler if the interceptor doesn't return a
rejection.

Closes #258
chore(bootstrap-css): update to v3.2
fix(index): add viewport info
fix(header/toolbar): update to boostrap 3
fix(alert css classes): bootstrap migration: alert-error -> alert-danger
fix(navbar): migrate to bootstrap 3
refact(columns): migrate to bootstrap 3
refact(buttons): migrate to bootstrap 3
refact(projects-edit): migrate to bootstrap 3
refact(users-edit): migrate to bootstrap 3
refact(users-edit): .img-polaroid -> .img-thumbnail
refact(productbacklog-edit): migrate to bootstrap 3
refact(sprints-edit): migrate to bootstrap 3
refact(tasks-edit): migrate to bootstrap 3
chore(modal): remove unused code

This is now provided by angular-ui bootstrap
fix(crudEdit): update to new mongolabResource

The methods in the latest version return promises
fix(crud): update to new mongolabResource

The methods in the latest version return promises
fix(UsersListCtrl): update to new mongolabResource

The methods in the latest version return promises
fix(tasks): update to new MongoLabResource

getByIds -> getByObjectIds