Remove injection of Settings from RedmineLineFuntion class and use the WorkflowContext.getProjectSettings() instead
Remove unused imports
Upgrade to 1.17 version of redmine-java-api
Add developer section
Remove property "jdk.min.version" and declaration of maven-compiler-plugin
Remove property "project.build.sourceEncoding" 
Replace declaration of sonar-packaging-maven-plugin by single property "sonar.pluginClass" with value "org.sonar.plugins.redmine.RedminePlugin"