merge from /dev_ipython to /branches/openalea_2 and fix QDataStream bug

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3667 04ea39c6-a500-0410-8508-e77fe2a861cf
fix some qstring bugs

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3668 04ea39c6-a500-0410-8508-e77fe2a861cf
fix logger

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3669 04ea39c6-a500-0410-8508-e77fe2a861cf
fix logger

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3670 04ea39c6-a500-0410-8508-e77fe2a861cf
correct qvariant and qstring

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3671 04ea39c6-a500-0410-8508-e77fe2a861cf
Visualea works with or without ipython

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3672 04ea39c6-a500-0410-8508-e77fe2a861cf
Add a tuto which explain how to have ipython in openalea

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3673 04ea39c6-a500-0410-8508-e77fe2a861cf
add 'from_qvariant' to compat.py - usefull for qsettings

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3676 04ea39c6-a500-0410-8508-e77fe2a861cf
Creation of OALab

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3677 04ea39c6-a500-0410-8508-e77fe2a861cf
correct import errors

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3678 04ea39c6-a500-0410-8508-e77fe2a861cf
Run python code from text editor in shell

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3679 04ea39c6-a500-0410-8508-e77fe2a861cf
add open and save buttons

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3682 04ea39c6-a500-0410-8508-e77fe2a861cf
add comments

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3683 04ea39c6-a500-0410-8508-e77fe2a861cf
save and open buttons works

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3691 04ea39c6-a500-0410-8508-e77fe2a861cf
use 'current_path'

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3692 04ea39c6-a500-0410-8508-e77fe2a861cf
syntax coloring

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3693 04ea39c6-a500-0410-8508-e77fe2a861cf
syntax coloring

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3694 04ea39c6-a500-0410-8508-e77fe2a861cf
save + save as + close

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3695 04ea39c6-a500-0410-8508-e77fe2a861cf
Add icons

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3696 04ea39c6-a500-0410-8508-e77fe2a861cf
Works with various (independent) files

git-svn-id: https://scm.gforge.inria.fr/svn/openalea/branches/openalea_2@3697 04ea39c6-a500-0410-8508-e77fe2a861cf