Separated import of model and setting velocity function. A model is now loaded from a .dsc file at start-up.
Pressing tab now switches between display types (displaying the interface, wireframe, edges, low quality tetrahedra etc.).
The simplicial complex is deformed when pressing 'm', even when no velocity function has been defined.
Bugfix in scale when importing/exporting + minor clean up.
Draws a coordinate system when drawing the unmoved.
Updated the data files such that the repository contains the armadillo, blob, eight, cube and sphere model files.