Fixing workgroups2 recipe dependencies

After updating packages, workgroups2 was no longer operational. It turned out that it now depends on some packages, one of which does not even have an el-get recipe.

With these 2 commits I add:
- Recipe for anaphora. The package for which we seemed to not have a recipe in el-get but was needed   from workgroups
- Specifying the dependencies at workgroups2 recipe.