Fix ModelCurve test
Fix Face test - face area computation is approximate, and this tolerance is just fine
Forgot to propagate unit conversion
Fixed BoundingBox tests
Fix ReferencePlane tests
Merge pull request #2393 from pboyer/RevitNodesTestsRedux

Fix failing test in RevitNodesTests
Merge remote-tracking branch 'origin/master' into Revit2015
Merge remote-tracking branch 'origin/Revit2015' into GeometryTestUpdates