Using Emoji causes an exception when submitting a proposal

[natewalck]

Steps to reproduce:

• Enter a proposal title that has an emoji such as ❤︎ or 💚
• Click Submit
• Observe exception

Here is a screen capture: https://www.dropbox.com/s/3ddem4b2ravz1ho/Screenshot%202015-03-30%2009.52.25.png?dl=0

Let me know if you need any further info!

[reidab]

I've been able to successfully add emoji using sqlite as the database, so I don't think this is an OCW-specific problem. That said, I want to solve this for the Open Source Bridge deployment as well, since it's also running MySQL at the moment.

According to this StackOverflow answer, it's possibly to configure MySQL to use the utf8mb4 charset, which is required for glorious emoji storage.

I won't have time to try this for a little white, but if you do, please let me know if it works.