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* JSON validation in now performed against `json-schemas` which give a standard way of handling this.
* All previous validation moved to new setup (`useful_links` field & `TaggedItem` in particular)
* Tags handling slightly updated (schemas are now hardcoded in the app and not stored in db)
* All new validators are unitested 🎉
* A bit of documentation added

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* Bumped backend image to version 0.2.1 with new python packages requirements
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Fixes #112
Mentions #113 #57

* Cleaned all init files
* Infer the serializer from the model instead of having it in the models
* Updated the doc accordingly
* Fixed typos

Fixes #93
Fixes #85

* Added new BaseModel /serializer/viewsets
* Change names of abstract models/serializers/viewsets
* Folder structure changed in tha backend
* Added some backend test
* Corrected bug related to moderation on non versionned modeles
* Corrected bug related to no post permissions
* Updated doc accordingly

Fixes #91

Added has_pending_moderation attribute
Tests also updated

Closes #44

Repo structure complete redesign
Fixes #38

Update backend : added FORCE_FULL_DISPLAY in serializer to return pending moderation elements as they are needed for the frontent in group view

usefull links validation using custom validation