Fixing an issue with the ORMMAReady-check in the mraid script, causing a javascript error due to improper checking for undefined values. This in turn leads to the 'else'-case never being reached, as the script exits with an exception before that.
Decreasing the rate of the ORMMAReady-checks from 20ms to 500ms, as this was causing a high CPU-load on mobile devices.

Increasing the optimization level on the debug-scheme, as well as removing the 'ONLY_ACTIVE_ARCH' build flag, as it led to the library not running on certain devices.