Use dependency injection for Rainbow and PortFactories.

[schmerl]

The idea is that this will make testing easier, because we can inject a test environment.

[schmerl]

There is a stab at this in feature/dependency_injection.

The Injection stuff isn't working because there is too much class loading going on. Injection can/should only happen once. Once it is done, when a class is loaded, the injection does not occur. So, for example, when the GUI is created below the injection of rainbow environment doesn't happen.

This will need a more comprehensive redesign of how classes are loaded that won't be backward
compatibile. One idea to achieve this is to have RCL generate a binding module for all the things
that need to be dynamically loaded, for example have a RainbowConfigModule that implements methods like:

bindModelsManager
bindAnalysis
bindGauges
...

That are generated by RCL and used in a new RainbowMaster (and Delegate and ConfigurationChecker).