Removed empty style.css to prevent clobbering in sub-themes.
IE collapsing facets fix.
Improved test coverage.
Improved comment.
Improved coverage.
Improved coverage.
Improved examples on English help screen.
Added comments.
Refactored to always use ISBN wrapper class.
Use ISBN-13's when possible.
- Resolves VUFIND-61.
Merge branch 'upstream'