[Issue #837] Refactoring implementation of HTTP string encoding edge case to -responseStringEncoding to fix potential inconsistency in effective value
Rework delivery of AFNetworkingOperationDidStartNotification and AFNetworkingOperationDidFinishNotification to avoid crashes when logging in response to notifications
Set indentation settings to four spaces at the project level
Update network activity indicator only if requests have a non nil URL
Merge pull request #843 from blakewatters/bugfix/avoid-logging-crashes-from-notifications

Rework Notification Delivery to Avoid Crashes in Logging
Merge pull request #842 from 0xced/no-nil-network-activity

Update network activity indicator only if requests have a non nil URL
Merge pull request #841 from 0xced/indentation-settings

Set indentation settings to four spaces at the project level
Merge remote-tracking branch 'AFNetworking/master'

* AFNetworking/master:
  Update network activity indicator only if requests have a non nil URL
  Set indentation settings to four spaces at the project level
  Rework delivery of AFNetworkingOperationDidStartNotification and AFNetworkingOperationDidFinishNotification to avoid crashes when logging in response to notifications
  [Issue #837] Refactoring implementation of HTTP string encoding edge case to -responseStringEncoding to fix potential inconsistency in effective value