Setting skill level to zero removes it

person.py

@@ -88,6 +88,7 @@ def setProfileImage(baseDir: str,httpPrefix :str,nickname: str,domain: str, \
 def setSkillLevel(baseDir: str,nickname: str,domain: str, \
                   skill: str,skillLevelPercent: int) -> bool:
     """Set a skill level for a person
+    Setting skill level to zero removes it
     """
     if skillLevelPercent<0 or skillLevelPercent>100:
         return False
@@ -95,12 +96,15 @@ def setSkillLevel(baseDir: str,nickname: str,domain: str, \
     if not os.path.isfile(actorFilename):
         return False
     with open(actorFilename, 'r') as fp:
-        actorJson=commentjson.load(fp)        
-        actorJson['skills'][skill]=skillLevelPercent
+        actorJson=commentjson.load(fp)
+        if skillLevelPercent>0:
+            actorJson['skills'][skill]=skillLevelPercent
+        else:
+            del actorJson['skills'][skill]
         with open(actorFilename, 'w') as fp:
             commentjson.dump(actorJson, fp, indent=4, sort_keys=False)    
     return True
-    
+
 def createPersonBase(baseDir: str,nickname: str,domain: str,port: int, \
                      httpPrefix: str, saveToFile: bool,password=None) -> (str,str,{},{}):
     """Returns the private key, public key, actor and webfinger endpoint