Store and sort by case-insensitive name for folders and items
Ensure (at load time) that lowerName field is set on item and folder
Add test to demonstrate lazy field calculation behavior

For lowerName and baseParent info
Merge pull request #203 from girder/item-coll-index-bug

Store and sort by case-insensitive name for folders and items
Merge remote-tracking branch 'origin/master' into test-describe-endpoints