[TIMOB-18062] iOS: AttributedString Parity with Android

[cheekiatng]

Jira: https://jira.appcelerator.org/browse/TIMOB-18062

iOS deprecation of Titanium.UI.IOS.AttributedString in favor of Titanium.UI.AttributedString. Pull request include Android support for AttributedString from pull request #6358, which will be closed once this PR is reviewed and merged.

Includes fix for font property in AttributedString, where fontsize was not working.

[pingwang2011]

2014

[pingwang2011]

If some duplicate properties are set, eg. "text" / "font" / "backgroundColor" and "text" / "font" / "backgroundColor" inside the attributedString, which one will be respected?

[ashcoding]

I'm addressing some of the issues of this PR in #6463

[ashcoding]

For the question: "If some duplicate properties are set, eg. "text" / "font" / "backgroundColor" and "text" / "font" / "backgroundColor" inside the attributedString, which one will be respected?"

In Android, the if you have for eg:

        // Sets a background color
        {
            type: Ti.UI.ATTRIBUTE_BACKGROUND_COLOR,
            value: "red",
            range: [text.indexOf('Appcelerator'), ('Appcelerator').length]
        },
                // Sets a background color
        {
            type: Ti.UI.ATTRIBUTE_BACKGROUND_COLOR,
            value: "blue",
            range: [text.indexOf('Appcelerator'), ('Appcelerator').length]
        },

The property that comes later will be applied over.

[ashcoding]

Closing this PR in favor of #6463
that contains Android modifications and documentation fixes on top of this PR.

[pingwang2011]

@ashcoding, you don't need to close this PR. You can just commit the update and push it to the branch.
Because you closed this PR, you lost all my comments.

[ashcoding]

Sorry about that!