feat(taggedItems): reworked, clean and operationnal & twaeked(site...

feat(taggedItems): reworked, clean and operationnal & twaeked(site information): added notification parameter

WARNING:
* Cleaned ALL migrations files as there were to many issues during the cleaning of taggedModels,

Tagged Items:
* Only for university and country now
* Auto creation on university/country creation
* Front operationnal
* Removed tag models and abstract tagged item

Site Information:
* Added a `should_notify` boolean to the model/front

Other:
* Added a default bot user
* Fixed timezone warning in the back
* Clean signals setup
* Fixed proptypes of Fields in the front
* Added HiddenField
* Deleted now useless files

Closes #30 #58
9 jobs for master in 4 minutes (queued for 3 seconds)
Status Job ID Name Coverage
  Check
passed #588635
docker
check_back

00:00:18

passed #588636
docker
check_front

00:01:13

 
  Test
passed #588637
docker
test_back

00:01:01

87.0%
passed #588638
docker
test_frontend

00:00:24

 
  Lint
passed #588640
docker
eslint

00:00:24

passed #588639
docker
flake8

00:00:12

 
  Svg Gen Docu
passed #588641
docker
generate_UML_svg

00:00:13

 
  Documentation
passed #588642
docker
pages

00:00:12

 
  Deploy
passed pages:deploy

00:00:00