[maven-release-plugin] prepare for next development iteration
Add Content-ID header
Simple updates
Merge branch 'master' of https://github.com/jenkinsci/email-ext-plugin
Added a new trigger 'status changed' to send notifications when the status of a build changes
Removed references to Calypso in javadoc
Refactored the definition of nested class DescriptorImpl and defined
some help resources for the new trigger
Deleted unnecessary resource files as the default one will be picked up
at runtime
Merge pull request #78 from fritaly/master

New trigger "status changed"
Fix JENKINS-18203

Implement support for managed files as templates.
More managed files stuff
Merge branch 'managed_files'
Fix JENKINS-20170

Added the correct path for the Triggers entry
Fix JENKINS-20325

Added fileNotFoundMessage paramter. The %s in the message will be replaced
with the filename.
[FIXED JENKINS-16376] Never wait for previous builds to complete just to get a more precise status.
If and when we need to know the status of a previous build but it is still running,
simply print a warning to the (current build’s) log and proceed as if the previous build did not exist.
Code Cleanup
Merge branch 'concurrent-JENKINS-16376' of https://github.com/jglick/email-ext-plugin into jglick-concurrent-JENKINS-16376

Conflicts:
	src/test/java/hudson/plugins/emailext/ExtendedEmailPublisherTest.java
FIXED JENKINS-20265

Added TRIGGER_NAME token
Fix JENKINS-20265

Added new content TRIGGER_NAME that will be replaced with the name of the
trigger that caused the email.
Fix test for TRIGGER_NAME content