feat(SiteInformation): back & front + tweaks

* Update home page
* Display dynamic information on the home page (external data update and site informations)
* back and front for SiteInformation
* Footer with important information
* Notification on connect for import information
* Fixed markdown currency rounding

Closes #120
9 jobs for master in 3 minutes and 46 seconds (queued for 1 second)
Status Job ID Name Coverage
  Check
passed #584198
docker
check_back

00:00:18

passed #584199
docker
check_front

00:01:13

 
  Test
passed #584200
docker
test_back

00:00:53

88.0%
passed #584201
docker
test_frontend

00:00:18

 
  Lint
passed #584203
docker
eslint

00:00:24

passed #584202
docker
flake8

00:00:13

 
  Svg Gen Docu
passed #584204
docker
generate_UML_svg

00:00:13

 
  Documentation
passed #584205
docker
pages

00:00:12

 
  Deploy
passed pages:deploy

00:00:00