* New extension event + Tumblr GDPR
https://github.com/FreshRSS/FreshRSS/issues/1894
simplepie_before_init event
* Refactor extension enabling + Tumblr GDPR enabled by default
Add possibility for extensions to be enabled by default, and disabled
back by users.
* Minor whitespace
- To the hook is associated a method signature (OneToOne or NoneToNone for now) so
it is easier to call hooks correctly
- post_update hook is called during the post update moment.
- New Extension->registerHook($hook_name, $hook_function) method to register a new hook
- Only one hook works for the moment: entry_before_insert
- ExtensionManager::callHook will need to evolve based on future hooks
See https://github.com/FreshRSS/FreshRSS/issues/252
- Only system extensions can be loaded for the moment by adding them in the config.php
file.
- Remove previous system (it will be added properly in the new system in the next step).