IOS7 UI PATCHES (3_1_X)

Backport of the following PR's

PR #4393 - Filesystem fix. Fixes [TIMOB-14231](https://jira.appcelerator.org/browse/TIMOB-14231)
PR #4149 - Fixes [TIMOB-13420](https://jira.appcelerator.org/browse/TIMOB-13420)
PR #4461 - IOS7 UI Patch Set 1
PR #4481 - IOS7 UI Patch Set 2

Test using KS [PR #110](https://github.com/appcelerator-developer-relations/KitchenSink/pull/110)