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This is so we dont have to save the entire player to the db every time we send mail

* Frontend is not very beautiful yet
* Didn't include too much `some anime game` data in the page to avoid being DMCA'd

Almost done! Wooooo!

1. During the conversion of Morphia calls to the new API, some of the `Filter.eq()` calls had their `field` set to `playerId` due to a copy/paste typo.

2. Morphia 2 switches to the codec system, so anything that will be serialized in the pipeline requires the `@Entity` annotation.

Added player "Help" command, added server "sendmsg" command, changed getAcccountByPlayerID to public in DatabaseHelper, and allowed player commands to be submitted with "/" and "!"