F# Composable Query:
 - Moved the code substituting nested builder calls to QueryTranslator.fs. What it does could probably be written much more efficiently
 - Fixed a bug preventing queries to work with private fields
Tests:
 - Finished automating all implemented tests
 - All tests should now pass successfully
 - Added a common base class for all tests
 - Example 5 in the 'People' tests now uses the correct (new) inner query. The old one used the seq{ } builder and was the reason this query was failing.
 - Added ClassInitializer for 'People'