The default content-security-policy of ownCloud forbids inline
JavaScript for security reasons. IE starting on Windows 10 will
however also obey the CSP which will break the event source fallback.
As a workaround thus we set a custom policy which allows the execution
of inline JavaScript.
This fixes https://github.com/owncloud/core/issues/14286
- L10N now converted to string to make them work with json_encode
- Added specific error message when server doesn't allow fopen on URLs
- Fixed client side to correctly show error message in a notification
- Added OCP\JSON::encode() method to encode JSON with support for the
OC_L10N_String values