optionally account different fees and penalties under different heads
removing warnings in loanproduct data
Merge pull request #341 from vishwasbabu/mifosx-413

Mifosx 413
validation for advanced accoounting options passed in during loan product creation
Merge pull request #342 from vishwasbabu/mifosx-413

validation for advanced accoounting options passed in during loan produc...
fix assertion of principal due values for loan scheudle.