Parse BlackBerry section in tiapp.xml.

This is a backport of the BlackBerry specific parsing
code for tiapp.xml. This fixes an issue with orientations not working.

[TIMOB-13874]
TIMOB-13897: Android: Add custom client header to Ti.Network XHR request
Merge pull request #4310 from srahim/timob-13898-3_1_X

[TIMOB-13898]  3_1_X IOS:Adding custom client header to Ti.Network XHR request
Merge pull request #4317 from ayeung/timob-13897-3_1_X

TIMOB-13897: Android: Add custom client header to Ti.Network XHR request
Merge pull request #4314 from joshthecoder/TIMOB-13874-3_1_X

Tested on device, works as expected
[TIMOB-13900]Switching to new analytics API endpoint Url