IE: Move IPython-specific password hashing out of framework into plugin.

See dicussion here - https://github.com/erasche/galaxy/commit/23459f318507255a2bb1d1fb647e1581bd2090e1.

config/plugins/interactive_environments/ipython/templates/ipython.mako

@@ -3,6 +3,7 @@
 <%
 import os
 import shutil
+import hashlib
 
 # Sets ID and sets up a lot of other variables
 ie_request.load_deploy_config()
@@ -10,6 +11,13 @@ ie_request.attr.docker_port = 6789
 # Create tempdir in galaxy
 temp_dir = ie_request.temp_dir
 
+if ie_request.attr.PASSWORD_AUTH:
+    m = hashlib.sha1()
+    m.update( ie_request.notebook_pw + ie_request.notebook_pw_salt )
+    PASSWORD = 'sha1:%s:%s' % (ie_request.notebook_pw_salt, m.hexdigest())
+else:
+	PASSWORD = "none"
+
 ## IPython Specific
 # Prepare an empty notebook
 notebook_id = ie_request.generate_hex(64)
@@ -32,7 +40,9 @@ notebook_login_url = ie_request.url_template('${PROXY_URL}/ipython/${PORT}/login
 
 
 # Add all environment variables collected from Galaxy's IE infrastructure
-ie_request.launch()
+ie_request.launch(env_override={
+    'notebook_password': PASSWORD,
+})
 
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