Jenkins Release Plugin

releaseVersionTemplate made nullable

reformat with emacs

changed formatting

use primitive boolean and append CRLF at the end of file

add test and comments

fixed review tasks

more params

use addAll instead of <<

fixed hints

remove comments

default values

default=true
Merge remote-tracking branch 'dickerpulli/releasePlugin'

Conflicts:
	job-dsl-core/src/main/groovy/javaposse/jobdsl/dsl/helpers/wrapper/WrapperContext.groovy
	job-dsl-core/src/test/groovy/javaposse/jobdsl/dsl/helpers/wrapper/WrapperHelperSpec.groovy