Add missing I18n include to TextFormatting

Signed-off-by: Alex Coles <alex@alexbcoles.com>
[wip] Handle macros outside Rails' view_context

This presents a more graceful notice, rather than rendering an error.

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Test macro rendering in work package resource spec

* Fix additional missing soft/implicit dependencies of WorkPackageModel

Signed-off-by: Alex Coles <alex@alexbcoles.com>