Corrected multiple string constant reference Scalastyle error.
Corrected Scalastyle IfBraceChecker configuration.
Resolved numerous scalastyle issues.

Removed trailing whitespace, refactored exception translation function
(to improve code and eliminate string constant repetition), ignored some
issues associated with assertion.
Corrected string constant repetition Scalastyle issue.
Refactored cell color names to conform to Scala conventions.
Removed redundant @since documentation tags.
Removed trailing whitespace.
Ignore line length exceeded errors.
Refactored to overcome string constant repetition Scalastyle errors.