[lime-dev] RFC: warn non existent default opt access

I have been thinking about the unexpected behavior made evident by modifications in the branch reproducible_config Look at line 5 of this paste for an example of misbehavior http://pastebin.com/deGbPvmB I have been investigating for what can be causing it and discovered we are accessing configurations that are not declared in our default file, so I have added a couple of them that were obviously missing and added some code to avoid insurgence of this again in the future So please test 568ffd9b80a8aec053ae3ff16c6f5ff1647d17bd and feedback ;) Cheers!