move to handlebars, merge two packages into one

dumpAst/build.gradle

dumpAst/src/main/jastadd/GenerationBackend.jadd

dumpAst/src/main/jastadd/GenerationFrontend.jadd

dumpAst/src/main/jastadd/GenerationMustache.jrag

dumpAst/src/main/jastadd/GenerationToPlantUml.jrag

dumpAst/src/main/jastadd/GenerationToYaml.jrag

dumpAst/src/main/jastadd/Imports.jadd

dumpAst/src/main/jastadd/Navigation.jrag

dumpAst/src/main/resources/dumpAst.mustache

dumpAst/src/main/resources/dumpAstVersion.properties

dumpAstWithPlantuml/.gitignore

dumpAstWithPlantuml/build.gradle

dumpAstWithPlantuml/src/main/jastadd/Generation.jadd

dumpAstWithPlantuml/src/main/resources/dumpAst.mustache

.../src/main/resources/dumpAstWithPlantumlVersion.properties

settings.gradle

testDumper/build.gradle

...e/tudresden/inf/st/jastadd/testDumper/TestDumperMain.java

...va/de/tudresden/inf/st/jastadd/testDumper/TestSimple.java

testDumper/src/test/resources/simplelogger.properties