[SO-27] The session is clearing out the value of the proposal log number before the action can handle it. I switched to by more synchronous
using request parameters instead of session data. This is more intuitive to how lookups work anyway. I also added a null check just in case.
Merge pull request #44 from leo-at-rsmart/feature/SO-27

[SO-27] The session is clearing out the value of the proposal log number...