Turn on/off sharing in AUTHOR mode

The checkbox is not reflecting the database value, but the change is
sending to database. Will fix this problem later.
css changes missed
Get share bit value from database

For checkbox in author mode.
php script to fetch share bit added
Turn on/off sharing in AUTHOR mode done

Everything should work now.
Merge branch 'master' into jingxian2
Code review for share bit.
  Format Bug for checkbox should be noted in Bugzilla
  and in css/dragoon.css
  Need to re-vamp problem saving and fetching as
   described in the changes to the documentation and in
   new Trello card.
Merge branch 'master' into jingxian2
Also, fixed bug with existence test for shareBit in
saveProblem().
Turn on/off sharing after modified solutions table

The checkbox of share bit works for new solutions table.
Merge branch 'master' into jingxian2
Code review for share bit.
  In www/css/dragoon.css, line 110: need to document Dojo bug.
  Label in Description editor needs to explain what share button
  does.  "Share this problem with others."
Added explanation to share checkbox

Edited only one line--line 177 in www/index.html
Mark root nodes(unfinished)

The checkbox is there and functional.
Need to format the checkbox and enable it after the node type is
declared to be  “accumulator” or “function”
Mark root nodes (done)

The checkbox is there and functional.
It will be enabled after the node type is declared to be  “accumulator”
or “function”.
It will be disabled and unchecked when the type is chose as "parameter".
Done button on description editor

The done button is now in lower right hand corner.
Merge branch 'master' into jingxian2
Code review for share bit.  Removed widget and went
back to regular html checkbox.
Merge branch 'jingxian2' of github.com:bvds/LaitsV3 into jingxian2
Code review for root node.  Still have bug with
invisible checkbox.  Work-around by changing opacity in css.
Add css style sheet for checkboxes, sliders, and the select widget.
This makes the checkbox widget work.  Use widget for all checkboxes,
using the same style handlers throughout.