hom: update homogenized coefficient classes for term_mode argument
hom: update homogenized coefficient classes for term_mode argument

- update MiniAppBase.__init__()
- update {CoefSymSym, CoefFMSymSym, CoefDimSym, CoefNN, CoefN, CoefSym,
  CoefFMSym, CoefOne, CoefFMOne}.__call__()

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