[cXF] Install App Notice 1.1.3

Description
Add a notice at the top of the forum about installing the mobile app with some extra features.


Features

• add a notice to the top of your forum about installing the mobile app
• option to change the notice style in style properties (based on predefined XenForo notice styles with an option to add custom CSS)
• option to change the default GIF image for iOS explanation
• option to remove the install banner in the mobile menu
• user permissions to hide notice

Database changes

This add-on adds extra column (cxf_ian) to xf_user_option table in database. This is required to store the settings for each user