Changeset 1897 for code/trunk/init

Added init directory that contains all the files required to run orxonox.
This namely includes plugins.cfg and orxonox.ini in order to set the media path and the plugins correctly.
The solution is not perfect, but a lot better than having all those files in bin/.
We could for instance create an addition special folder for tardis to get rid of plugins.cfg-init, etc.

Also created init/common for files like *.tcl or def_keybindings.ini

Changes in msvc files:
files from init/common and init/SolutionName/ConfigurationName are automatically copied to the output directory if not yet existing.