Moved AWS configuration also to global
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/resources/de/codecentric/jenkins/dashboard/DashboardView/configure-entries.jelly
	src/main/resources/de/codecentric/jenkins/dashboard/DashboardView/global.jelly
Extracted DashboardViewDescriptor to separate class
Moved fetching EC2 environments to descriptor so always available
#2 Refactored Strings from Java classes
#2 refactored code, added documentation
Test-Connection for AWS in global configuration
Refined error messages for failed AWS-Connection
Merge pull request #14 from ChristianLangmann/master

AWS-Connection Test added to config-page
#15 fixed build job parameters, refactored code
Added EC2 Credentials docu
Update README.md
Refactored packages, added message after deployment, clean code
Update deploy messages
XStreamHelper finally works

I finally got the XStreamHelper to work. Turns out that the XStream2
extension that comes with jenkins overwrites basic methods and prevents
nested objects from being deserialized from XML files.
Added connection check before getting artifact list
Merge branch 'master' of github.com:codecentric/jenkins-deployment-dashboard-plugin
Update readme with instructions on how to use the plugin
Update readme with instructions on how to use the plugin
#2 refactored code, added documentation