Adding new pages to the website main structure

ippisite/ippidb/static/css/ippidb.css

ippisite/ippidb/templates/about.html

ippisite/ippidb/templates/add.html

ippisite/ippidb/templates/admin-session.html

ippisite/ippidb/templates/chemical.html

ippisite/ippidb/templates/drug-candidate.html

ippisite/ippidb/templates/general.html

ippisite/ippidb/templates/index.html

ippisite/ippidb/templates/pharma.html

ippisite/ippidb/templates/pharmacology.html

ippisite/ippidb/templates/physicochemistry.html

ippisite/ippidb/templates/query.html

ippisite/ippidb/templates/tutorials.html

ippisite/ippidb/urls.py

ippisite/ippidb/views.py