Assorted fixes and minor updates and such.

Fixes:

• Fixed channel id resolving on startup
• Fixed voice channel not updating internally when the bot is moved
• Fixed error introduced by discord.py update
• Fixed docker thing maybe?

  Changes:

• The joinserver command now generates the oauth url required to invite the bot if the bot is on a bot account
• The update_deps script now requests admin to run
• The opus dlls have been removed since they now come with discord.py
• Errors are printed in a few more situations
• Updated various comments