NEW GUI + BUG delete / label colors

- NEW : the GUI is optimized in the colormap box to be able to modify vectors features. The checkbox "dislpay vectors" and the option " Vectors Density" are not implemented yet.

- BUG : erase the m_glyphList when deleting windows

- BUG : modify actor id during the label color modification (add 1 because of the new glyph actor)