[TIMOB-20189] Android: Update AttributeProxy to allow fontStyle to be set without having fontWeight to be manually set.

[collinprice]

On Android, a user had to manually specify fontWeight and fontStyle when they wanted to add only a fontStyle to an AttributedString.

For example:

This would do nothing on Android

  Ti.UI.createAttributedString({
    text: "Hello World",
    attributes: [
        {
            type: Ti.UI.ATTRIBUTE_FONT,
            value: { fontStyle: "italic" },
            range: [0, 5]
        }
    ]
})

A user would have to add a fontWeight for the text to be "italic"

 Ti.UI.createAttributedString({
    text: "Hello World",
    attributes: [
        {
            type: Ti.UI.ATTRIBUTE_FONT,
            value: { fontWeight: "normal", fontStyle: "italic" },
            range: [0, 5]
        }
    ]
})

[collinprice]

Travis build fail seems to be unrelated to pull request. Going to close and reopen.

[collinprice]

Attempting to restart Travis build.

[hansemannn]

@collinprice Can you file a JIRA ticket to be referenced here?

[collinprice]

Created: https://jira.appcelerator.org/browse/TIMOB-20189

EDIT by Hans: Moved ticket to TIMOB, thanks!

[hansemannn]

Approved, thank you @collinprice!