Dockerised. Restructured to remove circular import

Moved most of app definitions out of guard function to use wsgi
Updated configuration files and referencing of .env values.
Local version needs dotenv or exporting of env variables.
Dockerised version works fine without load_dotenv.
Ready to test now!

ref-test/quiz/views.py

@@ -8,7 +8,6 @@ from flask_mail import Message
 
 from pymongo.collection import ReturnDocument
 
-from main import app, db, mail
 from common.security import encrypt
 from common.data_tools import generate_questions, evaluate_answers
 from common.security.database import decrypt_find_one
@@ -24,6 +23,7 @@ views = Blueprint(
 @views.route('/')
 @views.route('/home/')
 def home():
+    from main import db
     _id = session.get('_id')
     if _id and db.entries.find_one({'_id': _id}):
         return redirect(url_for('quiz_views.start_quiz'))
@@ -31,6 +31,7 @@ def home():
 
 @views.route('/instructions/')
 def instructions():
+    from main import db
     _id = session.get('_id')
     if _id and db.entries.find_one({'_id': _id}):
         return redirect(url_for('quiz_views.start_quiz'))
@@ -38,6 +39,7 @@ def instructions():
 
 @views.route('/start/', methods = ['GET', 'POST'])
 def start():
+    from main import db
     from .forms import StartQuiz
     form = StartQuiz()
     if request.method == 'GET':
@@ -85,6 +87,7 @@ def start():
 
 @views.route('/api/questions/', methods=['POST'])
 def fetch_questions():
+    from main import app, db
     _id = request.get_json()['_id']
     entry = db.entries.find_one({'_id': _id})
     if not entry:
@@ -124,6 +127,7 @@ def fetch_questions():
 
 @views.route('/test/')
 def start_quiz():
+    from main import db
     _id = session.get('_id')
     if not _id or not db.entries.find_one({'_id': _id}):
         flash('Your log in was not recognised. Please sign in to the quiz again.', 'error')
@@ -132,6 +136,7 @@ def start_quiz():
 
 @views.route('/api/submit/', methods=['POST'])
 def submit_quiz():
+    from main import app, db
     _id = request.get_json()['_id']
     answers = request.get_json()['answers']
     entry = db.entries.find_one({'_id': _id})
@@ -161,6 +166,7 @@ def submit_quiz():
 
 @views.route('/result/')
 def result():
+    from main import db, mail
     _id = session.get('_id')
     entry = decrypt_find_one(db.entries, {'_id': _id})
     if not entry: