#1299 Merge 2 'Invalid Directory Entries' reports

[Ahasuerus]

Merge the following cleanup reports:

• Authors with Invalid Directory Entries - http://www.isfdb.org/cgi-bin/edit/cleanup_report.cgi?6
• Authors with Non-Latin Directory Entries - http://www.isfdb.org/cgi-bin/edit/cleanup_report.cgi?189

If I recall correctly, the original reason why they were "separated at birth" was that one of them allowed moderators to "ignore" author records while the other one didn't. However, their logic has been tweaked a few times and neither one supports the "ignore" functionality at this point.

Checking the code behind the reports, I see that one of them is a superset of the other. There are some minor display differences, but I don't see anything that should prevent us from merging them.

[Ahasuerus]

Implemented in:

edit/cleanup_lib.py
edit/cleanup_report.py
nightly/nightly_job.py
nightly/nightly_transliterations.py

Installed in SVN 460 on 2019-10-04. Closing the FR.

[Ahasuerus]

Part 2 - Changed the remaining report to display the 'Working Language' value. Implemented in edit/cleanup_report.py, installed in SVN 461 on 2019-10-04. Keeping the FR closed.