#1538 Improve front page performance

[Ahasuerus]

Improve front page performance. Move the process of determining "select forthcoming books" to the night job.

[Ahasuerus]

Part 1:

common/SQLparsing.py
common/isfdb.py
nightly/front_page_pubs.py
nightly/local.mk
nightly/nightly_job.py
scripts/create_front_page_pubs.sql

Installed in SVN 1009 on 2022-09-17. This patch created the nightly process which populates the new table, but the front page code doesn't use it yet.

[Ahasuerus]

Part 2 - Updated the weekly job and consolidated weekly/nightly code:

nightly/local.mk
nightly/nightly_job.py
nightly/nightly_weekly_common.py
nightly/weekly_job.py

Installed in SVN 1010 on 2022-09-18. Keeping the FR open.

[Ahasuerus]

Part 3 - Update the front page code to use the same retrieval algorithm as the nightly job:

biblio/index.py
common/SQLparsing.py
nightly/front_page_pubs.py

Installed in SVN 1015 on 2022-09-30.

[Ahasuerus]

Part 4 - Update the front page code to use the pub list built by the nightly job:

biblio/index.py
common/SQLparsing.py
nightly/front_page_pubs.py

Installed in SVN 1016 on 2022-10-01. Closing the FR. Further tweaks will be likely done a part of different FRs if and when we decide how we want to tweak the publication selection algorithm.