Move the tools to their own subdirectory;
and add a new [planned] tool for editing sound sets.
What are these doing here?
Big commit, click for details.
- Add the supported types back to the info.plist.
- Support the tox:// url scheme. Format: tox://<friend address>
- Chat transcripts now work. Beware, extremely buggy.
  - Export all DES* constants to JavaScript.
  - Export the DESChatContext to JavaScript.
    - This is available as window.Conversation object.
- Tweak the default theme a little bit
- Update the DeepEnd version.