Add attendance tracking

requirements.txt

@@ -14,12 +14,13 @@ flask-bootstrap==3.3.7.1  # via -r requirements.in
 flask-mail==0.9.1         # via -r requirements.in
 flask-migrate==2.5.3      # via -r requirements.in
 flask-sqlalchemy==2.4.3   # via -r requirements.in, flask-migrate
-flask==1.1.2              # via -r requirements.in, flask-bootstrap, flask-mail, flask-migrate, flask-sqlalchemy
+flask-wtf==0.14.3         # via -r requirements.in
+flask==1.1.2              # via -r requirements.in, flask-bootstrap, flask-mail, flask-migrate, flask-sqlalchemy, flask-wtf
 idna==2.10                # via py3-validate-email
-itsdangerous==1.1.0       # via flask
+itsdangerous==1.1.0       # via flask, flask-wtf
 jinja2==2.11.2            # via flask
 mako==1.1.3               # via alembic
-markupsafe==1.1.1         # via jinja2, mako
+markupsafe==1.1.1         # via jinja2, mako, wtforms
 py3-validate-email==0.2.9  # via -r requirements.in
 pymysql==0.9.3            # via -r requirements.in
 python-dateutil==2.8.1    # via alembic
@@ -28,3 +29,4 @@ six==1.15.0               # via python-dateutil
 sqlalchemy==1.3.18        # via alembic, flask-sqlalchemy
 visitor==0.1.3            # via flask-bootstrap
 werkzeug==1.0.1           # via flask
+wtforms==2.3.1            # via flask-wtf