Had to fix the ApplicationTree and Application classes to lazily call the Cache method
(which is no renamed to EnsureCache) so that we could set the config location in the unit tests.
This should also improve performance a teeny bit and allow for better error handling if required.
locally when debugging. Updated build script to not have to manually build the umbracosqlce project
since its now referenced.
Updated ignore file.
Removed Umbraco.sdf as being referenced in the repository.
Fixed SqlCEInstaller to automatically create the sqlce database if it doesn't exist, we now don't ship the empty database
and this is much nicer for working in the core.
