This commit does several things:

[vity455771]

This commit does several things:

• Moves all projects forward to Xcode 11 format
• Updates build settings and localization targets
• Converts swift projects to Swift 5
• Moves the bar forward from iOS 7 to iOS 9
• Removes all support for UIWebView
• Removes the deprecated call - (void)fillLoginIntoWebView:(nonnull id)webView forViewController:(nonnull UIViewController *)viewController sender:(nullable id)sender completion:(nonnull OnePasswordSuccessCompletionBlock)completion;
• Updates Readme.md urls, removes mention of a newsletter

Resolves: #414, #409, #369

Originally posted by @rudyrichter in https://github.com/agilebits/onepassword-app-extension/pull/417