Changes:
- Replaces PackageLineup with the dependencies.props approach to manage package versions.
- Generate the csproj/fsproj files that go into template packages
- Remove the DependencyUpdater and PullRequestSubmitter tasks
- Remove bower.json and bowerrc from Microsoft.DotNet.Web.ProjectTemplates
- Set MyGet feeds via MSBuild instead of NuGet.config
- Upgrades to the functional tests
- Update Selenium
- Make it possible to run tests on macOS/linux
- Disable test parallelization