Merge pull request #1 from franzose/2.0

2.0
Modified ClosureTableTestCase to allow the testing of filteredTree()

I modified the schema adding a language column, in order to have two
page sets, one labeled "en" and a second labeled "ru"
Merge pull request #21 from vjandrea/2.0

Modified ClosureTableTestCase to allow the testing of filteredTree()