Fixed some bugs handling tuples

src/main/java/de/tla2b/analysis/AbstractASTVisitor.java

src/main/java/de/tla2b/analysis/BOperation.java

src/main/java/de/tla2b/analysis/SpecAnalyser.java

src/main/java/de/tla2b/analysis/TypeChecker.java

src/main/java/de/tla2b/analysis/UsedExternalFunctions.java

src/main/java/de/tla2b/global/BBuildIns.java

src/main/java/de/tla2b/global/BBuiltInOPs.java

src/main/java/de/tla2b/global/TranslationGlobals.java

src/main/java/de/tla2b/output/ASTPrettyPrinter.java

src/main/java/de/tla2b/output/Indentation.java

src/main/java/de/tla2b/translation/OperationsFinder.java

src/main/java/de/tla2b/types/TupleOrFunction.java

src/main/java/de/tla2b/types/TupleType.java

src/main/java/de/tla2bAst/BAstCreator.java

src/main/java/de/tla2bAst/Translator.java

src/test/java/de/tla2b/prettyprintb/ExampleFilesTest.java

src/test/java/de/tla2b/prettyprintb/ExceptTest.java

...est/java/de/tla2b/prettyprintb/ExternelFunctionsTest.java

src/test/java/de/tla2b/prettyprintb/FunctionTest.java

src/test/java/de/tla2b/prettyprintb/LogicOperatorsTest.java