Include all files of theme directory in the package

MANIFEST.in

 recursive-include sage_validation/file_validator/templates *
 recursive-include sage_validation/file_validator/static *
-recursive-include sage_validation/theme/static *
-recursive-include sage_validation/theme/templates *
+recursive-include sage_validation/theme *
 recursive-include sage_validation/templates *
 recursive-include sage_validation/static *
\ No newline at end of file