Somewhat standardize smilie keyboard key widths beyond the minimum width.

It looks nicer when there's only a couple standard widths, instead of having all manner of differing widths depending on the smilie size.
Add 1Password button to login screen.

I tried to add it as a CocoaPod at first, but support for .xcassets is, erm, lacking. Copying over the files works fine.

The non-Acknowledgements Pods junk is mostly cleanup from an earlier simplifying of schemes.