ef1 bug fixes and some documentation improvement

[AlisonLanski]

1) Fixing bugs found during local testing:

• students should be able to have multiple CIPs in even-year reporting
• all distance-ed location groups must be included even if there are no students

2) Making startingdf changes (which affects dummy-data and vignettes) to accompany bugfixes

3) Streamlining roxygen/metadata a little because why not?