Wire in karma-coverage which gets run as part of grunt "test" task

- the karma-coverage has been configured to output simple text and
  HTML reports to "karma-reports" directory

- for more info, visit karma-coverage project home:
  https://github.com/karma-runner/karma-coverage
Merge pull request #859 from skwoka/karma-coverage

Wire in karma-coverage
changed model name
print functionality fixed
Merge pull request #863 from goutham-M/mifosx-print-sav-loan

print functionality fixed