Eased use of open event request waiting; also, added supervisor plugin for starting new experimental environments
Introduced global events from the main beliefstate component, als extended the supervisor to start a new experiment when beliefstate startup is complete
Dynamic management of experiment spaces completed. Directories are created, symlink is set, and the global settings are updated accordingly when starting a new experiment through the supervisor.
Current experiment symlink name now configurable through config file
Let imagecapturer save captured images to the current experiment directory
Correctly export generated OWL files in the current experiment directory
Replaced static lib search path by dynamically generated path

The variable `$WORKSPACE' is now replaced by the currently active ROS workspace devel directory (in catkin, this might be /home/johndoe/catkin_ws/devel). If `$ROS_WORKSPACE' is set, it's value will be used. If not, the first (colon-separated) value in the list of paths in `$CMAKE_PREFIX_PATH' will be used. By default, the search path in the config.cfg file is now set to `$WORKSPACE/lib/' to take advantage of that.
Removed unnecessary comment.
Also, made the base data directory dynamic (i.e. using tokens) by supplying a global token replacement function.

The `$HOME' token is now resolved to the current user's home directory (and can be used in the base data directory, and in search paths).