improve ngdocs: livereload with alternate port, nav template, image, css
Temporarily pointing gulp-ngdocs dep to branch with fixes

We can change back to official versions when he merges my
pull requests.
Merge branch 'ngConsole' of github.com:andyperlitch/malhar-ui-console into ngConsole

Conflicts:
	docs/ngDocStyles.css
Merge pull request #377 from andyperlitch/ngConsole

Temporarily pointing gulp-ngdocs dep to branch with fixes