Add visible Indication of a secure connection for EV certificates

[mario]

Background

#3203 introduces a visible indication of certificates by differentiating between malicious certificates, self-signed certificates and properly signed certificates. In #3203 EV certificates are displayed the same as signed certificates. EV certificates, however, should be marked differently to indicate this very type of certificates. Users are used to it due to the fact that the most popular browsers behave that way. Furthermore being able to identify EV certificates improves the user's security, as these certificates are validated extensively.

What to change

As soon as a properly signed EV certificate is used by a website, display the URL bar as such:

• Show a padlock in front of the URL and display the URL in green color as outlined in this screenshot.
• Color to be used for the URL: # 36aa46
• Styleguide

Remark for testers

You can visit the following websites in order to test EV certificates. All of them use EV certificates by default:

• ​https://paypal.com/
• ​https://finanzportal.fiducia.de/

You can compare them to ordinary certificates by visiting the following websites, which don't use EV certificates:

• ​https://google.com
• ​https://amazon.com

[mario]

Dev notes by Pavel as outlined in the original issue:

EV: initial dev info gathering
​​https://developer.apple.com/library/ios/technotes/tn2232/_index.html
SecTrustCopyResult
​​http://opensource.apple.com/source/Security/Security-55471/sec/Security/SecTrust.h
​​https://support.apple.com/en-us/HT205205
mind the EV policy column
Supplemental pseudo algorithm
​​https://unmitigatedrisk.com/?p=203

[mario]

Batch modify: added Adblock-Browser-for-iOS-next milestone.

[scheer]

• Upon visiting one of the suggested EV certificate websites, a green Padlock symbol, as shown above, is displayed in the address bar and the address text is changed from black to green (# 36aa46).

ABB 1.3.0-qa (824)
iPhone 6 Plus - iOS 9.2.1