CB-12320: (iOS) WIP Add support for navigation bar

[spongessuck]

Platforms affected

iOS

What does this PR do?

• Adds support for using the iOS navigation bar as an alternative to a top-positioned toolbar. This makes the toolbar look much more native. When navigationbar=yes is set, it puts the toolbar buttons in the navigation bar and hides the toolbar.
• Allows for the navigation buttons to be hidden using navigationbuttons=no.
• Allows for adding a title to the navigation bar using navigationbartitle.

What testing has been done on this change?

Tested to make sure the new options are respected. I'm not sure what kind of automated tests might be required/have to be changed.

Checklist

• Reported an issue in the JIRA database
• Commit message follows the format: "CB-3232: (android) Fix bug with resolving file paths", where CB-xxxx is the JIRA ID & "android" is the platform affected.
• Added automated test coverage as appropriate for this change.

Issues

• Location bar doesn't appear correctly when toolbarposition=top is set.

[cordova-qa]

Cordova CI Build has completed successfully.

Commit - Link
Dashboard - Link

Builder Name	Console Output	Test Report	Device Logs
Windows 10 Store	Link	Link	Link
iOS	Link	Link	Link
Android 4.4	Link	Link	Link
Android 5.1	Link	Link	Link

[reidab]

Pulled down this PR and in my local testing with navigationbar=yes and navigationbuttons=yes the back/forward buttons appear to be reversed.

[spongessuck]

@reidab Thanks, fixed in af70ef3.

[cordova-qa]

Cordova CI Build has completed successfully.

Commit - Link
Dashboard - Link

Builder Name	Console Output	Test Report	Device Logs
Windows 10 Store	Link	Link	Link
iOS 9.3	Link	Link	Link
iOS 10.0	Link	Link	Link
Android 4.4	Link	Link	Link
Android 5.1	Link	Link	Link

[rcprdf]

In my local testing of this PR with navigationbar=yes the status bar was never visible
or for that matter without navigationbar= when displaying a plain toolbar
the space reserved for it was empty

Seems to be a consequence of the tmpWindow / tmpController passed to presentViewController, code introduced by the prior PR CB-11136 ("InAppBrowser fails to close with WKWebView OAuth") - when I back out that fix the status bar is displayed properly above the navigation bar (or toolbar), and everything seems to work - at least with UIWebView, I have not tried it with WKWebView

[reidab]

@rcprdf I think the statusbar is being hidden behind the IAB window. I submitted PR #209 to fix this a few weeks back.