Add simple search functionality.
Add a clear search button.
Remove misleading variable.
Only show badges when searching.
Fix potential avenue for crashing.
Merge pull request #192 from mozilla/188-performance

Add some simple search functionality
Show programs on badge edit screen.
Merge branch 'v2.0' of github.com:mozilla/openbadger into v2.0
Initial commit of webhook calling.
Merge branch 'upstream/v2.0'