ChartUnit, ReportReader, ViewerFrame and Constants: fixed Checkstyle issues (mvn checkstyle:checkstyle)

ChartUnit:
- Fixed Checkstyle issues (after running "mvn checkstyle:checkstyle" and checking "target\checkstyle-result.xml").
- Changed MAX_INTENSITY_STRING_FORMAT and RANGE_AXIS_NUMBER_FORMAT into MAX_INTENSITY_FORMAT and RANGE_AXIS_FORMAT to allow higher level future reuse.

ReportReader: fixed four Checkstyle issues (mvn checkstyle:checkstyle)
- Fixed four Checkstyle issues (after running "mvn checkstyle:checkstyle" and checking "target\checkstyle-result.xml").
- Spilt off part of the code of the createReportUnit method to the new handleQCPipelineDataFile method.
- Removed unused msrunName parameter from the checkDataFilesAvailability method.

ViewerFrame:
- Fixed two Checkstyle issues (after running "mvn checkstyle:checkstyle" and checking "target\checkstyle-result.xml").
- Used Utilities.setFontContainer (see below) to set the font for a group of components in the createReportIdPanel method.
- Removed unnecessary call to reportIdPanel.setForeground(Color.WHITE) from the createReportIdPanel method.

Constants:
- Fixed six Checkstyle issues (after running "mvn checkstyle:checkstyle" and checking "target\checkstyle-result.xml").
- Added @SuppressWarnings("UnusedDeclaration") annotations to the LIST_SORT_KEYS_DOUBLE and LIST_SORT_KEYS_INT constants that are unused while the new sorting code is in development.
- Made it more clear that REPORT_ERROR_LABEL_FONT is equal to DEFAULT_FONT.
- Removed some unnecessary "Constants." prefixes.

Utilities:
- Created the setFontContainer method to set the font for a container and all its components.