Merge branch 'master' into 'release'

ippisite/docs/source/conf.py

ippisite/docs/source/index.rst

ippisite/docs/source/references.bib

ippisite/ippidb/models.py

ippisite/ippidb/templates/compound_card.html

ippisite/ippidb/templates/compound_db_links.html

ippisite/ippidb/templates/compound_dbsearch_links.html

ippisite/ippidb/templates/compound_l_item.html

ippisite/ippidb/templates/compound_list.html

ippisite/ippidb/templates/compound_test_counts.html

ippisite/ippidb/templatetags/customtags.py

ippisite/requirements-core.txt

ippisite/requirements-dev.txt