Bump to version 3.8.4alpha-3
Fix 3.8.4a2 migration patch
Enhance thumbnail display
Add route to modify apllication webhook urls
Handle new webhook field
Add new webhook column in api_aplications table
Add possibility to modify webhook url in template
Fix hidding of callback field when clicking desktop type application
Add api_webhooks table
Add api webhook adapter
Add new feed entry web hook when creating a new feed entry
Add webhooks only if feed notify_email is set to true
Add webhook task
Fix array declaration
Enhance data schema
Merge pull request #1073 from nlegoff/fix-migration-384a2

[3.8] Fix migration 3.8.4-alpha2
Merge pull request #1072 from nlegoff/patch-cors

[3.8] Patch cors
Fix phras-47 Force authentication to see push content
Merge pull request #1033 from nlegoff/api-hooks

[3.8] Add API webhooks mechanism
Merge pull request #1071 from nlegoff/thumbnail_display_cleanup

[3.8] Enhance display code of thumbnails