universal sharing and course completion/cert alert
universal share block with collapsing link if nothing special to share
fixed conflict on master merge
Merge branch 'master' of https://github.com/Stanford-Online/class2go into giulio-share-results
add default value to share_block_title var
fix whoopsie where I removed % sign from inline width attribute
fixed js error and added default share block content
remove unnecessary datetime import
fixed typo in share block text
Merge branch 'master' of https://github.com/Stanford-Online/class2go into giulio-share-results
Merge pull request #2417 from Stanford-Online/giulio-share-results

Universal share block (closes #2409)