Malfunction pull request

[FeignDeath]

The following changes are as follows:

• Changes to actionlist.py, api.py and convert.py implement the message passing from save to load together with some parts of the old malfunction passing. This provides save/1, load/1 and malfunction/3.
• solve.py was changed to call the right functions and also handle the absence of a secondary encoding correctly. Previusly an empty secondary encoding would lead to an error, now the already set up behavior of falling back to the primary encoding works. The merge also
• envs/.../malfunction_test.lp, -.pkl and -.png are just random instances which were generated with instances for testing
• asp/malfunctions_test.pl provides a stupid encoding. It just has every train moving forward, but illustrates how save/1. load/1 and malfunction/3 work. The corresponding params.py was adapted to use it.
• The params.py for building instances was kept simple to reduce confusion.