Adding missing files in Pods directory.

When following the instructions from a clean clone of the project, the pod install
step will find the directories and the podspec gems and will not try to reinstall
the missing files.

Some files weren't added in commit 6d463d since they matched the
.gitignore file. Also, some files where there and don't belong exactly to the
pods. I removed them. Finally, I updated one file from SVPullToRefresh that
were changed in their HEAD.

See CocoaPods/CocoaPods#733 for more information.
Merge pull request #220 from drodriguez/missing-pods-files

Adding missing files in Pods directory.
Fixed crash in accounts controller. Closes #221

When deleting the last account
Various minor improvements
Deactivate NSURLCache for now
Updated avatar loading in cells
Fixes for safe api value loading
Hopefully this fixes #221

Together with the previous commit (c25c79b) this might fix issue #221 - can't tell, because I could not reproduce it.
Hopefully this fixes #222

This might fix issue #222 - can't tell, because I could not reproduce it.
Moved "open account if there is only one" call
Refactored Repository Controllers
New beta version
Added warning dropdown
Events got loaded twice
Deactivated NSURLCache and remove cachePolicy code

NSURLCache seems to have a problem with Cache-Control="private" headers. Most resources of GitHubs API use this header and the response gets cached longer than the interval given by GitHub (in most cases 60 seconds). This way we lose caching, but its still better than unexpected results.
Added test for TeamAddEvent
Cleanup
Refactoring: Comment saving
Refactoring: Issue object saving
Refactoring: Watching, Starring, Following