always create default users

For old notebooks, there was no default user
and so certain functionality such as documentation
would not work with recent sage.
This patch makes sure that the default users are
always created if they are not present.
Make Jmol/JSmol work in notebook

This requires installation of the Jmol/JSmol package in
SAGE_ROOT/local/shared/jsmol.
Merge branch 'master' of https://github.com/sagemath/sagenb
Tweaks to Jmol/JSmol

Tweaks to Jmol/JSmol in notebook.  Pure javascript 3-D interactive plots
with option to load live or static. Have removed user interface bells
and whistles temporarily.
Merge pull request #1 from sagemath/master

Updating with master
Merge branch 'master' of https://github.com/sagemath/sagenb
Merge branch 'master' of https://github.com/sagemath/sagenb
Merge branch 'master' of https://github.com/sagemath/sagenb
Merge branch 'master' of https://github.com/sagemath/sagenb

necessary,
Update version in setup.py to 0.10.8.3
Update the changelog with a brief summary of changes
Merge pull request #193 from ppurka/issue-default-users

always create default users
Localizations according to flask.ext.babel standard mechanism
locales validation and remove duplication of en_US in settings
Check for default language corruption
commented code deleted
Change default color selector to colorpicker

This should have happened long ago in http://trac.sagemath.org/ticket/9000 and perhaps changed somewhere.  Default color picking has not worked since then.
fix some doctests in colorpicker
add the fact that jpicker is broken
update jquery & jquery-ui

JSmol (javascript Jmol) uses newer jquery.  Updating to latest for
compatibility. Deleted the development-bundle subdirectory.