[UPDATED] Change TestFlight preprocessor toggles to
TESTFLIGHT_SDK_VERSION.
[IMPROVED] Change logic behind shared MPAppDelegate to inheritance,
allowing for the common files to implement methods that the
platform-specific class can override.
[IMPROVED] Handling and checking of config changes.
[ADDED] iCloud config toggle, allowing a user to turn on and off
the iCloud store.
[IMPROVED] Explanation of iCloud.
[ADDED] Importing mpsites exports.
[RENAMED] keyHashHex -> keyID.
[RENAMED] Calculated -> Generated.
[FIXED] iOS: Dismiss mail VC when done with it.
[FIXED] iOS: Properly hide content tip icons when a content tip is
shown while one with an icon is still active.
[FIXED] iOS: Settings bundle was using old keys.
[UPDATED] Moved shared MPAppDelegate code into separate files
depending on the code's responsibility.
[UPDATED] iCloud implementation removed in favor of
iCloudStoreManager's managed implementation.
[FIXED] iCloud configuration made AppStore friendly.
