project find minimize file lists
* gave ordered results list has-collapsable-children class
* added arrow traversal skipping over minimized chunks
see issue #98

got scrolling partially working
still is a little unstable

left-right arrow events work

expand function does reselection
add spec files for collapable behavior
clicking on file only calls .expand()
`.expand()` now does all the reselecting for the caller`
expand/collapse code uses ifs instead of error handling
expand/collapse properly scrolls to
if the new selected element is outside the view, scroll to it
Fix trailing whitespace
:lipstick:
:lipstick: cleanup specs
:lipstick:
Merge pull request #253 from atom/bo-ch-fold-results

Foldable results in results view