restructure info so that python help will display it

bindings/python/app_utils.py

@@ -4,13 +4,14 @@
 ## @file
 #  @brief High level python wrapper for app-utils
 #  @ingroup python_bindings 
+#
+# further functions in _sw_app_utils that have not been included:
+# _gnc_get_current_book is available through Session.get_book()
+# _gnc_get_current_root_account is available through Book.get_root_account()
+
 
 from gnucash import _sw_app_utils
 
 def gnc_get_current_session():
     from gnucash import Session
     return Session(instance=_sw_app_utils.gnc_get_current_session())
-
-# further functions in _sw_app_utils
-# _gnc_get_current_book is availabe through Session.get_book()
-# _gnc_get_current_root_account is available through Session.get_root_account()