Merge pull request #1061 from akbargumbira/develop

Age ratio will be validated if it's postprocessing layer
Merge pull request #1062 from akbargumbira/develop

Pep8 Pylint fixes.
Merge pull request #1063 from akbargumbira/develop

Fixes for Pep8 Pylint violation and failing test of realtime.
Merge pull request #1064 from akbargumbira/develop

Pylint, remove trailing spaces.
Fix last pylint violation.