add staging app id to plist

should be safe to have both there, and
that way I don't forget it all the time.
bump HockeySDK and adjust API

 Submodule changes to be committed:

 * Vendor/HockeySDK b22a421...e7fdea7 (44):
   > Merge branch 'feature/authSetup' into develop
   > Properly check for identification before calling BITUpdateManager startManager only if the user is identified or JMC is setup
   > Allow apps to overwrite strings in their own localization files
   > Fix crash if minOSVersion is not provided
   > Provide public access to the anonymous UUID being used
   > Fix update view controller not showing updated content after using the check button and actually receiving new content
   > Localization string updates, translations pending
   > More documentation updates
   > [Authenticator] also check the host part of a given URL
   > Added more documentation to BITCrashManager
   > Fix memory leak in BITKeyChainUtils
   > Add some documentation to the last commit and note it doesn't work on iOS 5
   > If the parentViewController onto which a modal view will be presented is still being presented, try again a little later
   > Merge pull request #67 from elektrojunge/develop
   > Merge pull request #66 from elektrojunge/develop
   > Add namespace to local methods and make the C function static to avoid linker problems when adding similar libraries using PLCR
   > FIx usage value being reset on every app cold start
   > Fix removing observers correctly
   > Add missing Security framework to podfile
   > Consider Feature defines in BITHockeyManagerDelegate.h
   > Add missing BITFeedbackManagerDelegate.h import in HockeySDK.h and fix @protocol statement that was added as @class
   > Fix a build problem with iOS 6 as base SDK
   > Update to version 3.5.0 RC 2
   > Update intro text of Authentication how to
   > remove isValid flag reset tests
   > remove assertion
   > Adjust iOS 7 icon radius in update view
   > Add iOS 7 icon sizes
   > Block assertions in release builds
   > Fix gloss still being added to app icons in iOS 7 *doh*
   > Update to version 3.5.0 RC 1
   > Update PLCrashReporter build to 1.2 Beta 2
   > Update authentication documentation.
   > Only use UUID for appAnonID
   > Add more tests for BITHockeyHelper
   > Add support for iOS 7 native Base64 encoding
   > Move BITValidateEmail to BITHockeyHelper named bit_validateEmail and add some tests
   > Add additional tests for BITCrashManager
   > Add first set of basic unit tests for BITCrashManager
   > UI fixes for Update view and iOS 7
   > Actually use the radius and don't only set it
   > Don't add gloss when on iOS 7 to icons in update view
   > Draw icons in update view with different radius when on iOS 7
   > add URL for HockeyApps identification site to public interface
add a new view controller with different authenticator options
bump HockeySDK

 Submodule changes to be committed:

 * Vendor/HockeySDK e7fdea7...42e0882 (1):
   > re-validate once alert-view was dismissed
   > add missing localized error message
cleanup
bump SDK

 Submodule changes to be committed:

 * Vendor/HockeySDK 42e0882...72c8033 (1):
   > cleanup
show all possible authenticator error messages in an alertview