app: Finished basic integration with Net::Jenkins

- Set a default Jenkins port (to port 8080)
- Check to see if the 'https˝ URL scheme is used, and if so, set the
  port to port 443, unless another port is specified
- Changed lots of log INFO messages to be DEBUG messages instead
- Create a Net::Jenkins object using the URL created by passing it
  through the URL regex
- Fixed creating an HTTP::Headers object, don't set
  'authorization_basic' until after the object is created and returned
  to the caller
- Dump the summary() if DEBUG is set
- Fix hash references to the returned job summary
app: started working on POST to submit new job