Implement the Get it button on detailed app view

[leosa83]

Description

Somehow we need to check the user agent and detect if the browser is running on iOS , android or desktop and then load the corresponding link for the button.

If on iOS and App Store link exists and Website link exists Then

• Change "Get it" to "Get the App" and link to the iOS App Store URL
• Change the "Feedback" button below the "Get it" to "Visit webpage" and link to the website

If on iOS and Website link exists App Store link does not exists Then

• Change the "Get it" to "Visit Webpage" and link to the website
• Delete the "Feedback" button below the "Get it"

(Same goes with Android, only change iOS to Android and App Store link to Google Play link)

If on Desktop and Website link exists Then

• Change the "Get it" to "Visit Webpage"