global refactoring and fixes,

removed support of extracted(aligned) PNG faces. Use old builds to convert from PNG to JPG.

fanseg model file in facelib/ is renamed

core/leras/archis/ArchiBase.py

@@ -0,0 +1,17 @@
+from core.leras import nn
+
+class ArchiBase():
+    
+    def __init__(self, *args, name=None, **kwargs):
+        self.name=name
+        
+       
+    #overridable 
+    def flow(self, *args, **kwargs):
+        raise Exception("this archi does not support flow. Use model classes directly.")
+    
+    #overridable
+    def get_weights(self):
+        pass
+    
+nn.ArchiBase = ArchiBase