Added -2 and -0.5 as exceptions for the magic numbers check.
Added descriptions of the main, gui and input packages by adding package-info.java files in these three packages.
Added APPLICATION_TITLE field (application name and version).
Used the FONT_NAME field for the definition of all font fields.
Commented out several unused fields.
Fixed lots of Checkstyle issues: added Javadocs, ...
Created determineReportDateRange method.
Added a private constructor.
Fixed lots of Checkstyle issues: switched UncommentedMain check off for main method, created POLL_INTERVAL_PIPELINE_LOG field, added & extended Javadocs, etc.