opengraph POC
Fixed incompletely saved OpenGraphCache bug
Added opengraph content to mood page
Improved opengraph data display
Replaced opengraph with opengraph_parser
Code style fixes
Og info appears only if oembed isn't available
Fixed typo
Load og data faster (after_save -> after_commit)
Code style fixes, removed unneeded rescue
rspec test for GatherOpenGraphData worker
Fixed infinite open_graph_worker firing
Added rspec test for og in status_message model
Added rspec test for og_html helper
Fixed small-frame opengraph view
Improved tests for opengraph embedding