fix for facebook image field & og:image
clone settings when a node with settings is cloned
removed unnecessary test file
added working image preview on social settings admin screen and node level settings pages
Coder cleanup.
Global facebook image default now propagates as a default setting to node level forms
identified issue where current node object is not available in hook_tokens(). Added code to load current node from args where possible
passed first round of dev QA
added support for custom icons and button text
removed errant dsm
Merge pull request #426 from JacksonRiver/7.x-4.x-facebook-image-settings

7.x 4.x facebook image settings