Fixes a crash. Hopefully fixes a login issue related to percent-encoding.
- iPad: Don't crash when showing post actions sheet. [#31]
- Hopefully: Should be able to log in with + in email or password. [#29]
- Form-urlencoding adds some special "form" sauce atop "url encoding" that I missed.
- iPad: Present Settings as a popover.
- Add rudimentary app info in Settings, so you can see what version you're running.