OO-278 fix wrong default value for debug mode and check if source path really...

OO-278 fix wrong default value for debug mode and check if source path really exists when setting to prevent followup errors.

olat.local.properties.sample

@@ -85,7 +85,7 @@ instance.id=myopenolat
 ########################################################################
 
 # for developers set to true - velocity pages are NOT cached
-olat.debug=true
+olat.debug=false
 # for developers set to false - i18n files are not cached
 localization.cache=false
 # path to the source code. Use this together with olat.debug=true in a 

src/main/java/org/olat/core/util/WebappHelper.java

@@ -230,11 +230,23 @@ public class WebappHelper implements Initializable, Destroyable, ServletContextA
 	}
 
 	public void setFullPathToSrc(String fullPathToSrc) {
-		WebappHelper.fullPathToSrc = fullPathToSrc;
+		File path = new File(fullPathToSrc);
+		if (path.exists()) {
+			WebappHelper.fullPathToSrc = fullPathToSrc;			
+		} else {
+			log.debug("Invalid fullPathToSrc configuration, reset to empty path");
+			WebappHelper.fullPathToSrc = "";
+		}
  	}
 
 	public void setFullPathToWebappSrc(String fullPathToWebappSrc) {
-		WebappHelper.fullPathToWebappSrc = fullPathToWebappSrc;
+		File path = new File(fullPathToWebappSrc);
+		if (path.exists()) {
+			WebappHelper.fullPathToWebappSrc = fullPathToWebappSrc;
+		} else {
+			log.debug("Invalid fullPathToWebappSrc configuration, reset to empty path");
+			WebappHelper.fullPathToWebappSrc = "";
+		}
  	}
 	
 	/**

src/main/resources/serviceconfig/olat.properties

@@ -258,8 +258,9 @@ layout.coursetemplates.blacklist=
 
 # test user generation
 user.generateTestUsers=false
+# debug mode for developers. If olat.debug is set to true you must also set project.build.home.directory to your source code
 olat.debug.comment=for developers: Set to true to enable visual debugging by the red/green bug icon on the upper left corner of olat
-olat.debug=true
+olat.debug=false
 
 # cache localization files (unless in development mode)
 localization.cache=true