DueUtil for Windows

• Update to latest DueUtil
• Added d!questcontrol
• Small text fixes

New features & now shares code with main bot

• DueUtil for Windows now is built from the same repo as the main bot (and now has a bunch of new features)
• Invite link shown when the bot loads
• Removed code useless for a testing bot (vote commands, feedback commands, etc).

First test release!

• The first version of DueUtil for windows!