Empty folder on refreshing folder state
Fix travis build
Use bower for test dependencies
Prevent dragging a folder into descendant folders

[fixes #82]
Build
Don't call cancelDrag() if folder is dragged into descendant

... because that stops dragging into ANY other folder
Add stubbed test for getPathToRoot
Fixed a typo
Merge branch 'dev' of https://github.com/CenterForOpenScience/hgrid into dev
Added tests and functions for getting the path from a Tree or Leaf from itself to the root, and also from being able to do that just by having the HGrid and the ID of the item.
Tests and functions for whichIsContainer, a handy function that, given to node ids, will tell you which, if either, of those nodes contains the other.
Removing highlight whenever the _targetFolder is cleared. This should fix #84.
Fixed typo
Fixed issues from the code review.
Eliminate the top-level indent which chews space for no reason.
Fixed test and built
Merge pull request #89 from brianjgeiger/feature/better-indent

Feature/better indent
Fixed drag proxy, which was set for moving rows between other rows (as in the original SlickGrid example), not for dropping into folders.
Merge pull request #91 from brianjgeiger/feature/drag-target-fix

Fixed drag proxy, which was set for moving rows between other rows (as i...
Add preprocessFilename hook

For sanitizing filenames added to the grid