Fix NPE, create blueprints in parallel and reduce verbosity

[srmurguia]

• Fix a NPE when the project has orphaned modules (default config has this issue)

• Reduce execution time by:

  • creating Android blueprints in parallel
  • generating modules in reverse order (ideally, topologial sort should be used, but for current implementation, reverse order is good)

• Reduce verbosity by

  • Remove some messages
  • Show percentage of modules finished instead of a message for each module