Fixed importing with a different key and entity access after MOC changes.

[FIXED]   Importing stored content when not logged in with the same key.
[FIXED]   Holding entities is a bad idea when MOCs can change.  Holding ObjectIDs instead now.
Import improvements and core data fixes.

[FIXED]     Import fixes:
                - Wait for MOC to become available.
                - Progress UI while working.
                - Import files exported with a different master password.
                - Core Data crashes.
[RENAMED]   Site's User name -> Login name.
[FIXED]     Core Data crashes related to using entities from old MOCs.
UserName -> LoginName
Modernize ObjC syntax.

[IMPROVED]  Migrate to modern ObjC syntax for type boxing.
Fixed a few crashes.

[UPDATED]   A nil type is never OK.  Crash early if it is so.
[UPDATED]   Set crashlytics identifiers using its userIdentifier and userName property for good metadata.
[FIXED]     Make sure the MOC has a PSC with stores when returning it.
[FIXED]     Don't reset the store for just any open error! Only if it's actually incompatible.
[IMPROVED]  Remove timestamps from Crashlytics and TestFlight logs, they already provide them.
[FIXED]     Avoid crashes in some odd cases where there's no type set.
Sharing on Facebook, Twitter and Google+

[FIXED]     Font of navbar.
[FIXED]     A few compile fixes.
[IMPROVED]  Made properties nonatomic.
[ADDED]     Support for facebook, twitter and google+ sharing.
Follow on social networks.

[UPDATED]   Migrated from MFMailComposeViewController to PearlEMail.
[ADDED]     Social network "follow" button.
Status bar issue.

[FIXED]     Status bar issue.
[FIXED]     Review dialog link and buttons.
Fade unlock VC + search bar responder fix.

[ADDED]     Fade effect to unlock view.
[UPDATED]   Signing profiles.
[FIXED]     A rare bug that caused the search bar to remain first responder without making it take input or dismissable (hopefully fixed, at least).
Layout Core Data model graph.
Make user name entry required.

[FIXED]     Prevent the ability to create a new user without user name.
Disabled custom button title font because of odd iOS bug.

[FIXED]     Odd bug that causes imageViews to get oddly stretched.
Bump Pearl.
Added "Other Apps".

[REMOVED]   Cleaned up some check points that weren't really useful.
[ADDED]     Added a few new checkpoints with new functionality.
[ADDED]     An "other apps" page that introduces Gorillas and DeBlock.
[IMPROVED]  Help is now toggled with a drag handle instead of an action
            button.
Migration of saved passwords.

[ADDED]     Migrate saved passwords when master password changes.
[IMPROVED]  UI improvements to apps.
Font improvements and copy-login fix.

[FIXED]     Login name copies content instead of login name.
[IMPROVED]  Font of password and login name improved for better
            differentiation between capital and lower-case letters.
Fixes related to review feedback.
Fixed crashes related to over-released gesture recognizers.

[FIXED]     Memory warnings caused Master Password to crash due to
            gesture recognizers and an iOS 5 bug.
Tag screens in Localytics + email fix + psc fix

[FIXED]     Sending email with no recipient caused a crash.
[FIXED]     Duplicate persistence coordinator.
[UPDATED]   Crashlytics and Localytics SDKs.
[UPDATED]   Don't continue the Localytics session when device locked.
[UPDATED]   Put Localytics communication on HTTPS for confidentiality.
[ADDED]     Tagging screens in Localytics.
Localytics project configuration update.