Fixes for deploy validations.
Fixes for deploy validations.

* Removed date stamp from generated sources as there are two sets of generated
  files (bower/npm) and they are generated in different time zones.
  * Bower resources are generated "locally" (dev machine) and submitted to the repo.
  * NPM resources are generated "centrally" on a VM.

Thus the validation may have failed due to different time stamps
and additionally the npm/bower resources would not be identical.
The timestamp now only appears in a single place.
The CHANGELOG.md

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