chore(docs): configure the base path for protractor tests in examples

Updates to dgeni-packages 0.10.5 which supports this configurability.
Change the dgeni config and protractor config so that we can have protractor
tests that are hosted outside the build/docs folder.

Provides support for https://github.com/angular/angular.js/pull/9557#discussion_r18977324
chore(docs): fix path to docs-app e2e tests

These tests are not generated by dgeni and so needed to have the paths
to the pages updated manually.

Closes #9680