Merge pull request #182 from rfellows/AngularDirectives

[PDI-11553] - Adding sample usage for folderBrowser on the angular-directives examples page
PDI-11158 - Build re-usable Browse widget

Moved styles to theme files, onyx WIP.  Added container, border, and background color to browser.  Updated auto scroll to reset browser caching issue.
Merge pull request #183 from jeffreythomas/dev

PDI-11158 - Build re-usable Browse widget
[PDI-11555] Add generic utility methods to traverse TreeBrowserModel and RepositoryFileTreeDto
Merge pull request #184 from bytekast/PDI-11555

[PDI-11555] Add generic utility methods to traverse TreeBrowserModel and RepositoryFileTreeDto
[PDI-11158] Fixed a bug in the folderBrowser where it was assuming the existence of children at every level.