[desing] New navbar design
Merge branch 'master' into design
[fix] notification_read is not plural
[enh] Spawn notification as document has been processed
[dev] Pictures for test accounts
[enh] Query optimisation
Merge branch 'master' of github.com:titouanc/beta402 into notifications
Revert "Merge branch 'master' of https://github.com/ekatsah/beta402"

This reverts commit 3ac653de2d9d513a703c392381a78dcee244b144, reversing
changes made to 5446f5e9dc4e08023cfb6753edda5e5fd68e0118.
[fix] Ensure notification uniqueness
[add] Notification when document processing completed
Merge branch 'master' into design
[rem] features that uses some code from the notifications branch
Fix merge conflicts
[fix] navbar links and toggle
Fix merge conflicts
[enh] use django signals to send notifications