Updated handling errors from Koral and fixed tests.

Change-Id: I7ff3caa35d247b4707c11315cf2e653eed9a689b
diff --git a/core/pom.xml b/core/pom.xml
index 109ef97..e4e6694 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -227,7 +227,7 @@
 		<dependency>
 			<groupId>de.ids_mannheim.korap</groupId>
 			<artifactId>Koral</artifactId>
-			<version>[0.31,)</version>
+			<version>[0.33,)</version>
 			<exclusions>
 				<exclusion>
 					<groupId>org.eclipse.jetty</groupId>