Merge branch '40-switch-check-style-errors-to-warnings' into 'master'

Checkstyle errors changed to warnings by default

Closes #40

See merge request grp-fidentis/analyst2!35

codestyle.xml

@@ -11,6 +11,7 @@
     <module name="FileTabCharacter"/>
 
     <module name="TreeWalker">
+        <property name="severity" value="warning"/>
         <!-- Checks for Javadoc comments.                     -->
         <!-- See http://checkstyle.sf.net/config_javadoc.html -->
 	<module name="MissingJavadocMethodCheck">