* Added General tab for Settings, with a prototype for Display Language combobox.
* Added prototype Singleton class file. Currently commented out.
* Added Title label to Settings, along with appropriate slots.
* Removed ProjectSettings. Planning to do implement this some other way.
* Fixed global Settings pointer allocation problem (by removing it).
* Fixed StyleTypeLabel not display colon at end of string.
* Incorporated QtSingleApplication from Qt Solutions Archive into project.