TEveCaloLegoGL:
Fix a crash when going from 3D to 2D lego view.

SmallFixes:

- CaloLegoGL, CaloLego
Change offset of XY axis titles.
Check gap between projected bin lines around average eta and phi values.

- cms_calo.C
Change color of towers to make towers more visible in 2D view.


git-svn-id: http://root.cern.ch/svn/root/trunk@24193 27541ba8-7e3a-0410-8455-c3a389f83636