#96 Split the nightly reports module into multiple modules

[Ahasuerus]

Split the nightly reports module into multiple modules. It's grown so much that it has become unwieldy. We will want separate modules for author duplicates, OS file regeneration, Wiki reports and general cleanup utilities.

[Ahasuerus]

Implemented in:

nightly/local.mk 1.4
nightly/nightly_dup_authors.py 1.1
nightly/nightly_lib.py 1.1
nightly/nightly_os_files.py 1.1
nightly/nightly_update.py 1.156
nightly/nightly_wiki.py 1.1

Installed in r2016-073 on 2016-04-19 (out of order instalaltion.) Closing.