added new auto-tag

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

de.srsoftware.cal.app/src/main/java/de/srsoftware/cal/app/AutoImporter.java

@@ -149,6 +149,7 @@ public class AutoImporter implements Runnable, ClassListener {
 			entry("synthie pop","SynthiePop"),
 			entry("tanz","Tanzen"),
 			entry("techno","Techno"),
+			entry("theater","Theater"),
 			entry("windows","Windows"),
 			entry("volleyball","Volleyball"),
 			entry("universität","Universität"),