Generalise exception handling

ref-test/app/tools/auth.py

@@ -15,7 +15,7 @@ def require_account_creation(function):
             if User.query.count() == 0:
                 flash('Please register a user account.', 'alert')
                 return redirect(url_for('admin._register'))
-        except (SQLAlchemyError, ConnectionError) as exception:
+        except Exception as exception:
             write('system.log', f'Database error when checking for existing accounts: {exception}')
             return abort(500)
         return function(*args, **kwargs)

ref-test/app/tools/data.py

@@ -78,7 +78,7 @@ def check_dataset_exists(function):
     @wraps(function)
     def wrapper(*args, **kwargs):
         try: datasets = Dataset.query.all()
-        except (SQLAlchemyError, ConnectionError) as exception:
+        except Exception as exception:
             write('system.log', f'Database error when checking existing datasets: {exception}')
             return abort(500)
         if not datasets:

ref-test/app/tools/forms.py

@@ -32,7 +32,7 @@ def get_time_options():
 def get_dataset_choices():
     from ..models import Dataset
     try: datasets = Dataset.query.all()
-    except (SQLAlchemyError, ConnectionError) as exception:
+    except Exception as exception:
         write('system.log', f'Database error when fetching dataset lists: {exception}')
         return []
     dataset_choices = []

ref-test/app/tools/test.py

@@ -133,7 +133,7 @@ def redirect_if_started(function):
         id = session.get('id')
         try:
             if request.method == 'GET' and id and Entry.query.filter_by(id=id).first(): return redirect(url_for('quiz._quiz'))
-        except (SQLAlchemyError, ConnectionError) as exception:
+        except Exception as exception:
             write('system.log', f'Database error when checking if test has been started: {exception}')
             return abort(500)
         return function(*args, **kwargs)