Reorder split series (with the criteria of series sorting)
Fix series date
Share same sorting methods between dicom explorer and export UI
update Jarsigner plugin
Use password encryption in pom.xml or maven user settings.xml for
jarsigner.alias and jarsigner.storepass properties 
@see http://jira.codehaus.org/browse/MJARSIGNER-24
Prepare to release 1.2.8-u1
[maven-release-plugin] prepare release 1.2.8-u1
[maven-release-plugin] prepare for next development iteration
Fix WEA-256
Fix WEA-255
Fix distribution of gogo shell