ChartUnit:
- Created the TRIM_PERCENTAGE_BARS constant to fix a magic number Checkstyle issue.
- Added some Javadocs, replaced a few tabs by spaces and fixed some other small issues.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
ChooseMetricsForm:
- Fixed a bug in the createTransferable method: selectedIndex is set again, so it can be used by the exportDone method (I accidentally removed this functionality during an earlier refactor step).
- Simplified some code in the createListModels and importData methods.
- Added some @Override annotations & Javadocs, replaced a few tabs by spaces and fixed some other small issues.

General:
- Moved the METRICS_SEPARATOR and OK_BUTTON_TEXT constants from the ViewerFrame and AboutFrame classes to the Constants interface to make them widely available.
ScrollDesktop:
- Fixed several Checkstyle issues by adding the authors to the class Javadoc, introducing two constants, adding some @Override annotations and making some parameters final.

SortedListModel:
- Fixed several Checkstyle issues by adding the authors to the class Javadoc and adding some Javadocs & @Override annotations.
Merge pull request #22 from FreekDB/master

Fixed a bug in ChooseMetricsForm and solved several Checkstyle issues