Link addon - using short links on whole hub
Example: https://ussr.win/link/5313176
Related to issues #1203 and #1049: "Short Link Addon"
This addon allows the use of short links on the whole hub. Can only be enabled by the administrator. With this addon enabled, it is possible to open posts and comments by the address: hub.domain/link/item where an item is the numeric value of an item from the database. Based on Zotlabs/Module/Display.php