introduced aristo tool.

TODO:
 * nice icon
 * nice brush
 * fix draw with marker
COPYING: new file

Open-Sankoré is released under the terms of the GNU Library Genereal
Public License, version 2, with a specific linking exception for the
OpenSSL project's "OpenSSL" library, so state that as in a general GNU
project and remove everything which is useless (and also misleading).

The LGPL-2 version is taken from the Debian base-files_6.9 package,
file /usr/share/common-licenses/LGPL-2.  The OpenSSL exception comes
from the GNU Wget license as in the Debian wget_1.13.4-3 package, file
/usr/share/doc/wget/copyright.
*.cpp: add 'LGPL-2 with OpenSSL exception' headers
*.h: add 'LGPL-2 with OpenSSL exception' headers
Fixed behavior for Tools and W3C_tools.
Fixed creation of transparent drawing view.
Fixed issue 280
Corrected a small issue
Fixed determining of supported file formats for CFF.
Corrected another small issue
Fixed a signal issue
Did a better implementation of this fix
SANKORE-985

shutdown after emptying the trashbin
Merge branch 'develop' into shiba-dev
Merge branch 'develop' of https://github.com/Sankore/Sankore-3.1 into develop
Merge remote-tracking branch 'remotes/origin/anatoly_dev' into develop
SANKORE-1026 Navigation palette: thumbnails isn't refeshed after application added to the page
Improvement of scene update flag setting
Improved behavior of interacts with items on board.
Merge branch 'develop' of github.com:Sankore/Sankore-3.1 into develop
UBFeatures translations
fixed issue with internal webbrowser