directory tree navigation works
streamlined the directory building by using a combination of delimiter/prefix properties
bucket and folder deletion is implemented
Merge branch 'master' of https://github.com/curt-labs/GoAdmin

* 'master' of https://github.com/curt-labs/GoAdmin:
  started working on views and edit video
  removed old code that worked with v2, starting fresh
  removed old code that worked with v2, starting fresh