save session for running with webbase app(Flask)

[WisTiCeJEnT]

Having a problem when using deepcut with Flask. First request everything just fine, but it's crash on next one. note that deepcut is working fine if it using in python interactive mode(python -i) it can predict for many times as it should be.

this is what I got from second requests with flask

tensorflow.python.framework.errors_impl.FailedPreconditionError: Error while reading resource variable conv1d_10/bias from Container: localhost. This could mean that the variable was uninitialized. Not found: Container localhost does not exist. (Could not find resource: localhost/conv1d_10/bias)
     [[{{node conv1d_10/Reshape/ReadVariableOp}}]]

with keras-team/keras#2397, tensorflow/tensorflow#28287 and https://stackoverflow.com/questions/53653303/where-is-the-tensorflow-session-in-keras I found that using same session solved this.

[titipata]

LGTM!