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/layers/LayerBase.py

@@ -0,0 +1,16 @@
+from core.leras import nn
+tf = nn.tf
+
+class LayerBase(nn.Saveable):
+    #override
+    def build_weights(self):
+        pass
+    
+    #override
+    def forward(self, *args, **kwargs):
+        pass
+    
+    def __call__(self, *args, **kwargs):
+        return self.forward(*args, **kwargs)
+
+nn.LayerBase = LayerBase