Fix problem when loading custom rules from project and app classpath

Fix problem so that the custom rules are firstly checked if they exist and then added, in order to avoid duplicates

Signed-off-by: Enri Ozuni <enriozuni@hotmail.com>

plugins/de.cognicrypt.staticanalyzer/src/de/cognicrypt/staticanalyzer/sootbridge/SootRunner.java

@@ -104,12 +104,20 @@ public static List<CrySLRule> getRules(IProject project) {
 			CrySLParser r = new CrySLParser(project);
 			for (String path : projectClassPath(JavaCore.create(project))) {
 				List<CrySLRule> readRuleFromBinaryFiles = r.readRulesOutside(path);
-				rules.addAll(readRuleFromBinaryFiles);
+				for(CrySLRule rule : readRuleFromBinaryFiles) {
+					if(!rules.contains(rule)) {
+						rules.add(rule);
+					}
+				}
 			}
 
 			for (String path : applicationClassPath(JavaCore.create(project))) {
 				List<CrySLRule> readRuleFromBinaryFiles = r.readRulesOutside(path);
-				rules.addAll(readRuleFromBinaryFiles);
+				for(CrySLRule rule : readRuleFromBinaryFiles) {
+					if(!rules.contains(rule)) {
+						rules.add(rule);
+					}
+				}
 			}
 
 			if (Activator.getDefault().getPreferenceStore().getBoolean(Constants.SELECT_CUSTOM_RULES)) {