#997 - set 0.0 on null input for rule builder price fields
Merge branch 'BroadleafCommerce-3.0.x' into BroadleafCommerce-3.1.x
#997 -allow for blank lines to be saved as of now. main issue can/will be resolved with form validation as discussed in #405
#1026. Added checks to ensure that we are not attempting to use session
if it is not allowed.  Added the concept of
SessionlessHttpServletRequestWrapper, which now gets set in the
StatelessSessionFilter.  This will throw an exception if a call to
retrieve a session is invoked.
#1026. Ensuring that sessions are not used when we are not supposed to
be using them.
Merge branch 'BroadleafCommerce-3.1.x' into develop