Save All does not save shader code

[jharaldson]

When creating a new workspace in Field, using the database structure, i.e. creating a new workspace by the command line, the shader code is not saved when using "Save All"
./f_mac fieldbox.FieldBox -file test -threaded 1

1. Create a new workspace
2. Add a new box
3. Insert some shader code
4. Save All
5. Exit Field
6. Start Field

Shader code is not saved.

[jharaldson]

Seems the ShaderPreprocessor class was not commited