Initial import of Step interactive physical simulator.

svn path=/trunk/playground/edu/step/; revision=629575
SVN_SILENT Removed accidentally added .swp file

svn path=/trunk/playground/edu/step/; revision=629577
Fix i18n

CCMAIL:ks.vladimir@gmail.com

svn path=/trunk/playground/edu/step/; revision=629588
Added zoomIn/zoomOut support and fitToPage (still buggy).

svn path=/trunk/playground/edu/step/; revision=629781
Fixed bugs with zoom when opening or creating new file.
Fixed bug with displaying 'save?' confirmation twice.

svn path=/trunk/playground/edu/step/; revision=629882
Fixed fit-to-page implementation.

svn path=/trunk/playground/edu/step/; revision=629884
Set default names for newly created items

svn path=/trunk/playground/edu/step/; revision=630386
Fixed sign of coulomb force.

svn path=/trunk/playground/edu/step/; revision=630520
add step for compilation and remove Physiks as if the Swig package is missing it blocks the whole module - Physiks is not likely to make it to KDE4
I had to suppress the std namespace in order for me to build step, hope it won't break for others

svn path=/trunk/playground/edu/step/; revision=631813
Added missed cstring

svn path=/trunk/playground/edu/step/; revision=631821
pedantic--

svn path=/trunk/playground/edu/step/; revision=631853
compile++

svn path=/trunk/playground/edu/step/; revision=631867
Q_PROPERTY in StepCore is now replaced by hand-made reflections.
Now Items are not QObjects, it is possible to copy them. It is possible to implement Undo !
Added translatable descriptions for objects and properties.

svn path=/trunk/playground/edu/step/; revision=633214
Added documentation for new reflections interface.

svn path=/trunk/playground/edu/step/; revision=633237
Added tooltips for buttons in palette.

svn path=/trunk/playground/edu/step/; revision=633240
FEATURE: added (still incomplete) undo support.

svn path=/trunk/playground/edu/step/; revision=636270
Added cloneObject function and operator= for World.

svn path=/trunk/playground/edu/step/; revision=637111
SVN_SILENT: fixed compilation problems.

svn path=/trunk/playground/edu/step/; revision=637125
Added unit test for World::operator=, fixed some bugs in it.

svn path=/trunk/playground/edu/step/; revision=637372
Undo/redo now works for simulation.

svn path=/trunk/playground/edu/step/; revision=637672