* Added separate directory for session recording files
* Changed recording & playback paths to use RECORDINGS dir and prevent absolute or relative paths in filename.
* Updated .gitignore so that recordings directory is ignored.
* Added session recording topic for synchronization of rec/play state with web gui.
* Added support to sessionRecording for providing a list of available playback files to web GUI.
* Fixed problem with playback filenames in list
* Fixed problem with occasional large jump in camera pos/rotation after playback finishes.
* Fixed the remaining post-playback problem that was causing a jump in position and rotation.
* Fix path issue on mac
* Fixed bug with bad scale values in recordings saved in ascii format.
