Added handling for some unsupported options.

Also added some tests.
Initial tests for i18n support (incomplete)
Added support for file type selection.
Working outbound TCP sockets plugin for Android.

Moves the existing iOS plugin into plugins/socket/ios.
The JS is shared.
Remove unused i18n_img.gif.
[Spec] Auto-load the last-visited page on start-up
[spec] Auto-run last test on page open

Also made test functions have the correct this object.
Wrote jasmine tests for chrome.i18n.

Still need a manual test page to test actually changing the language.