Charlie/shortcut data loss failsafe

[charliescheer]

Fix

With the new append shortcuts there is the possibility that your shortcut fails and if that happens the content you sent to the shortcut will be lost. There isn't a lot we can do to prevent that unfortunately, but we can attempt to save the content locally and then restore it on the next launch. So in this PR I have added a content recovery mechanism incase a shortcut fails. That way the user doesn't have to restore the written content if a shortcut fails.

Test

1. Build and run simplenote ios
2. Open up the shortcuts app and create an append to note or a create note with content shortcut
3. Disable the internet connections
4. run the shortcut

5. launch simplenote.

   • [ ] Confirm that a new note is created with the content from your shortcut

Review

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Release

These changes do not require release notes.

[wpmobilebot]

You can test the changes in simplenote-ios from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr1600-23bd4e9-019018fe-f8c6-4574-b4c3-c81f8a2118c9 on your iPhone

If you need access to App Center, please ask a maintainer to add you.