add reload button
Merge branch 'master' of git-next.kde.org:kde/gcompris into sudoku
sudoku beginning
Merge branch 'master' of git-next.kde.org:kde/gcompris into sudoku

Conflicts:
	src/activities/activities.txt
continuation of sudoku
sudoku: regions and numbers
fixed a typo

Replaced "an look for gold nuggets" by "and look for gold nuggets"
sudoku: images updated
RELEASE 0.16
core, added missing filter level min and max slots
core, added command line option --export-activities-as-sql

We are now a real application with a command line interface.
For now we accept --help, --version and an option
--export-activities-as-sql that creates an sql text file that can
be used to import the activities in an sql data base.

This is needed to get the activity list in our admin site.
sudoku: current item is in a box
Merge branch 'master' of git-next.kde.org:kde/gcompris into sudoku
sudoku: error state do not stay when restored
sudoku, reworked images

background comes from openclipart.
sudoku, improved item positions
sudoku, created a README for tracing images origin
sudoku, removed debug messages
sudoku, better item positioning
minor, all activities, added a sourseSize.witdth

Adding a property sourceSize.width: parent.width force the svg
image to be scaled properly at the window size. THe quality of the
background images is much better now.