SHKImgur for imgur.com
Imgur: option to submit to Imgur Public Gallery
BUGFIX: fixes #875 - displaced share form on landscaped iPad, if some field was set to be selected on startup. E.g. on LinkedIn text share.
BUGFIX: fixes #880. SHKFacebook’s getUserInfo now proceeds as expected.
BUGFIX: fixes #885 - sometimes missing default sharers (Facebook, Twitter)
Merge commit '5cbe1ffd69cda9ee911bf4a404d29083a0308e33' into imgurMaster

* commit '5cbe1ffd69cda9ee911bf4a404d29083a0308e33':
  Imgur: option to submit to Imgur Public Gallery
  SHKImgur for imgur.com
Adding OneNote support to ShareKit.
Fixed project settings
Fixed build break
CLEANUP: OneNote Sharer
Replacing LiveSDK.Framework with a version that has 64-bit support
Merge commit '01118de0fb0b9e80cddc3cfd0f377883485248af'

* commit '01118de0fb0b9e80cddc3cfd0f377883485248af':
  Replacing LiveSDK.Framework with a version that has 64-bit support
Merge branch 'master' into imgurMaster

* master:
  Replacing LiveSDK.Framework with a version that has 64-bit support
  CLEANUP: OneNote Sharer
  Fixed build break
  Fixed project settings
  Adding OneNote support to ShareKit.

Conflicts:
	ShareKit.xcodeproj/project.pbxproj
BUGFIX: fixed login flow if user uses other than native credentials (e.g. uses google Facebook etc account) in SHKImgur
REFACTORING: SHKImgurOAuthView has been renamed to SHKOAuth2View
NEW FEATURE: Added possibility to feed SHKRequest with ready-made NSMutableURLRequest. Handy for OAuth2 types of requests.
BUGFIXES: SHKImgur

- added refreshToken routines
- simplified implementation (now uses SHKRequest, removed status flags - I believe that they make the code unnecessarily complicated. They are the opposite of functional programming)
- SHKOAuthViewDelegate declaration separated to special file to avoid header dependency
NEW FEATURE: added anonymous uploads to Imgur
BUGFIX: fixed authorisation flow if user revokes access
Fix Analyzer warning

Fix the following Analyzer warning:

```
ShareKit/Classes/ShareKit/Core/Helpers/SHKFile.m:257:5: Potential leak of an object stored into 'result'
```

By converting the `UTITypeForPath:` method into a "` Create`" function `CreateUTITypeForPath` as suggested here http://stackoverflow.com/a/8628172/1049134
Ease SHKActionSheet subclassing

* Use `[self alloc]` to allow correctly instantiating subclasses.
* Prefer `instancetype` to `id` (other code should also be updated)