Logic for launching random work activity and retrieving result and resource file extension corrections

Logic for launching random word generation activity is ready w/ callback for using result.
It is all currently commented out, but can be hooked up when random word activity is ready.

Some resource files had incorrect file extensions preventing building.  
Please confirm if current upstream master prevents building.
Email.png renamed to email.jpg 
  - only lowercased characters seem to be allowed in resource filenames
  - check file w/ Preview.  It seems to be a jpg, not a png
facebook.png renamed to facebook.jpg
  - check file w/ Preview.  It seems to be a jpg, not a png