fixed copyright licenses
fixed minor bug in node labels
Sort choices in node editor.
This was copied off branch jingxian2
code restructuring for bug 2414
modified path css for automatic node creation
Root node selector relocated

The "root" checkbox is now in a individual row between "type" and
"inputs".
Merge branch 'master' into pradeep
Clean up code.  Add comment referencing Bug #2414.
added documentation as well as testing
added test installation instruction
Delete TestInstallation.docx
Working on changing "author" to "group".
Done but not tested.  Any existing SQL database
should be modified using:
    ALTER TABLE session CHANGE COLUMN `author` `group`  varchar(30) DEFAULT NULL;
Found Bug #2418, removed some old files.
After two bug fixes, it seems to work
in both student mode and author mode.
Merge branch 'bvds'
Merge branch 'master' into stable
This includes change from "author" to "group".
You will need to update your database using:
   ALTER TABLE session CHANGE COLUMN `author` `group`  varchar(30) DEFAULT NULL;
Has work-around for Bug 2414 (added delay) but no real fix.