TIMOB-9805 Blackberry: Implement UI.View.show

[jpl-mac]

Reviewers: Harut, DavidL

Changelog:

• Implement show
• remove unused var warnings in TiUIBase

Tests:

• merged in Dave's getChildren patch to fix the event handling
  -- Using an eventHandler, toggled between show and hide on UI Controls
  ==> Verify that hide and show functions work

[dlifshitz-maca]

For such a small patch, you could have also fixed all the warnings that TiUIBase.h touches.
Also, aren't we supposed to attach a sample app.js to the Jira these days?
Code looks fine but my attempts at testing have been unsuccessful.

[jpl-mac]

I posted the app.js I used to test this patch to https://jira.appcelerator.org/browse/TIMOB-9805.

It needs the getChildren patch from Dave to get the event handling to work (build is broken with it). I will add a merged commit here once the patch to fix the build has been merged in.

I will not modify the files that include TiUIBase.h as this patch is nowhere near them.

[jpl-mac]

Merged with blackberry, the app.js from the jira issue works on this branch now

[dlifshitz-maca]

Approved

[Harutyun]

Approved with comments

[jpl-mac]

Harut,

Comments are on the merge commit, that code is already committed and outside the scope of this patch. As there is nothing major i will not address in this PR.