ViewerGUI: show scalar bars and set view on scene.activated
ViewerGUI: show scalar bars and set view on scene.activated

- new Viewer.reset_view()

rc/sfepy,vlukes/sfepy,olivierverdier/sfepy,RexFuzzle/sfepy,BubuLK/sfepy,lokik/sfepy,vlukes/sfepy,sfepy/sfepy,olivierverdier/sfepy,RexFuzzle/sfepy,RexFuzzle/sfepy,olivierverdier/sfepy,lokik/sfepy,RexFuzzle/sfepy,BubuLK/sfepy,sfepy/sfepy,vlukes/sfepy,sfepy/sfepy,rc/sfepy,lokik/sfepy,rc/sfepy,lokik/sfepy,BubuLK/sfepy