Load threads on viewDidLoad and minor style fixes

[denissezavala]

• Load thread items automatically the first time a thread is loaded. I'd figure it be nice to not have to pull to refresh as soon as you open up a thread.
• On the mailing lists table view, don't show cell separators for empty cells.
• On threads table views, show cell separators when datasource is not empty.

Let me know what you think.

Cheers!

[matthewpalmer]

This is great—thanks!

My only concern is that refreshing automatically will break the UI tests (which we use for App Store screenshots). Could you please add a check around the lists refresh, something like this should work

// Check whether we are running UI tests before performing an automatic refresh.
// If we refresh immediately the screenshots (which we take with Fastlane in doing the UI tests)
// will be in an undefined state.
if !NSUserDefaults.standardUserDefaults().boolForKey("FASTLANE_SNAPSHOT") {
  // Do the refresh
}

Thanks again 👍

[denissezavala]

No problem—this is done in the last commit.

Cheers!