Fixing test folder names (part 1)
Fixing test folder names (part 2)
Split tests/binding into 3 folders: Binding, BindingList, BindingTemplate
Fixed .jsproj after test directory restructuring.
Fix addClassOneTime to work on IE with Arrays.

A small bug was introduced in #80 because IE does not allow you to provide multiple arguments to element.classList.add().

CR by @banguero
tolerate empty bound values when binding className