Manual install fix for pip requirements.txt package versions

[swaggner]

Gunicorn install should be no newer than 19.9.0 (sudo apt-get install gunicorn=19.9.0-1) and nginx needs to be 1.14.2 (sudo apt-get install nginx=1.14.2-2+deb10u3). Also, pip packages being installed during "sudo pip install -r requirements.txt” installs newer incompatible versions. Comparing versions to pibakery install reveals package versions that can be installed as follows:

sudo pip install babel==2.6.0
Flask-Babel==0.11.2
Flask-Caching==1.7.2
Flask-Login==0.4.1
Flask-Mail==0.9.1
Flask-OpenID==1.2.5
Flask-SQLAlchemy==2.1
Flask-Script==2.0.6
Flask-Testing==0.7.1
Flask-WTF==0.14.2
Flask==1.0.2
Jinja2==2.10
Mako==1.0.7
MarkupSafe==1.1.0
Pygments==2.3.1
SQLAlchemy==1.2.18
Sphinx==1.8.4
WTForms==2.2.1
Werkzeug==0.14.1
alarmdecoder==1.13.4
alembic==1.0.0
argparse==1.2.1
async==0.6.2
blinker==1.4
cffi==1.12.2
cryptography==2.6.1
distribute==0.7.3
docutils==0.14
gevent-socketio==0.3.6
gevent-websocket==0.9.3
gevent==1.1b4
gitdb==0.6.4
greenlet==0.4.15
itsdangerous==0.24
jsonpickle==0.9.5
mock==2.0.0
nose==1.3.7
psutil==5.5.1
pyOpenSSL==19.0.0
python-openid==2.2.5
pytz==2019.1
sh==1.12.14
six==1.12.0
sleekxmpp==1.3.3
smmap==0.9.0
speaklater==1.3
wsgiref==0.1.2
twilio==6.8.2 \