www/seahub: 5.1.5 -> 5.1.6

• [security] Fix permission checking for generating share links
• Add an option (ENABLE_SETTINGS_VIA_WEB) to ignore settings via Web UI (system admin->settings)
• [fix] Making user search (used in auto-completion) case insensitive

PR: 209863
Submitted by: Ultima1252@gmail.com (maintainer)