Minor updates to index.html page
 - fix displaying of name when userid and name has dash in it
Minor cleanup on API examples
Updated default presentation for BigBlueButton 0.81
Merge branch 'master' of github.com:bigbluebutton/bigbluebutton
Minor font changes to default presentation for BigBlueButton 0.81
Output correct icon URL for LTI in bbb-conf --lti
bbb-tool: Fix for bug on publish/unpublish-delete actions available on extended mode