adds fixes for run experiments
* minimee configuration is now read from the minimee installation
  directory, which has to be defined as minimee.home in plato
  configuration properties  - fixes #121
* run experiment: panel is now properly updated-fixes #118
* removed conversation scope from BytestreamManager, would be nice to have
  this, but this is not possible, because running experiments are run
  asynchronously, so the conversation scope is not available.
  For the same reason the ConfigurationProperties not injected, because
  they are annotated as session scoped...