Prevent user to use Sync if the server has an old plugin version

• Type: New Feature
• Status: In Progress
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: None
• Fix Version/s: None
• Component/s: iOS, Liferay Sync
• Labels: None

A dialog must be shown if the user tries to sign in in a server with an incompatible sync-web version.