Maintenance: upgrades requirements of packages and web-server

[pcrespov]

What do these changes do?

• upgrades packages/ and tests requirements
• isort constrained by pylint installed in some packages
• upgrades latest pip 20.2.2 that includes new resolver
• upgrades web/server requirements
• doc models with an ERD (entity relationship diagram). SEE packages/postgres-database/doc/database-models.md

Checklist

• Did you change any service's API? Then make sure to bundle document and upgrade version (make openapi-specs, git commit ... and then make version-*)
• Unit tests for the changes exist
• Runs in the swarm
• Documentation reflects the changes
• New module? Add your github username to .github/CODEOWNERS

[codecov]

Codecov Report

Merging #1696 into master will increase coverage by 0.0%.
The diff coverage is 100.0%.

@@          Coverage Diff           @@
##           master   #1696   +/-   ##
======================================
  Coverage    72.5%   72.5%           
======================================
  Files         277     277           
  Lines       11177   11178    +1     
  Branches     1231    1231           
======================================
+ Hits         8112    8113    +1     
  Misses       2731    2731           
  Partials      334     334           

Flag	Coverage Δ
#integrationtests	57.1% <100.0%> (+<0.1%)	⬆️
#unittests	66.4% <0.0%> (-0.1%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../sidecar/src/simcore_service_sidecar/log_parser.py	87.6% <100.0%> (+0.1%)	⬆️