Feat/braille print back end 4

See merge request !14

Never ever am i giving my branch to merge with somethingelse that is not a master branch again... Lesson learned
 Conflicts:
	build.gradle
	src/main/java/de/tudresden/inf/mci/brailleplot/App.java
	src/main/java/de/tudresden/inf/mci/brailleplot/configparser/JavaPropertiesConfigurationValidator.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/AbstractBrailleTableParser.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/AbstractDocumentBuilder.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/AbstractIndexV4Builder.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/FloatingDotAreaBuilder.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/GraphicPrintBuilder.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/JsonParser.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/NormalBuilder.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/PrintDirector.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/PrinterCapability.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/PropertiesParser.java
	src/main/java/de/tudresden/inf/mci/brailleplot/exporter/XmlParser.java
	src/main/java/de/tudresden/inf/mci/brailleplot/printabledata/BrailleCell6.java
	src/test/java/de/tudresden/inf/mci/brailleplot/exporter/PrintDirectorTest.java
	src/test/resources/config/concrete.properties
	src/test/resources/config/default.properties
	src/test/resources/config/illegalPropertyNameExample.properties
	src/test/resources/config/illegalPropertyValueExample.properties
	src/test/resources/config/missingRequiredPropertyExample.properties

Feat/rasterizer update 21

See merge request !13

Feat/rasterizer 10

See merge request !8