schroedinger: print analytical solutions' energies.
schroedinger: print analytical solutions' energies.

This works both for 2D and 3D and thus it is useful to immediatelly see if the
result is correct.

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