Issue: XF2 sharing options

XenForo 2's sharing options are tied to the XenForo 2.x widget-definition "Share this page" (class: \XF\Widget\SharePage), which is very good at generating the share-block automatically from the current URL, page title, and page description (if any). Since VaultWiki 4.1 will include support for the native XenForo 2.x widget system, there's really not any additional work that needs to be done to support the "Share this page" block. The admin just needs to add the XenForo widget to a widget-position that is available on wiki pages.

VaultWiki's own "Share this page" block from earlier versions has also been updated to work with XenForo 2's widget system. It might be preferred to use the wiki's block on wiki pages since it includes other options such as generating a link to use on other wiki pages.

Marking this as a duplicate of general XenForo 2 support.

Xenforo has multiple sharing functions:
1. sidebar widget
2. at the bottom of the page. (see any thread)
3. since XF2.1 in every post: https://xenforo.com/community/thread...2/post-1291227